Construction Site Security Cameras Buying Guide

Tom Yao

Construction sites are environments fraught with potential hazards and security issues, making the installation of a dependable and effective security camera system essential for ensuring the safety of the site and its workers. This article offers a comprehensive buying guide for construction site security cameras, designed to help you select the best device to meet your specific requirements.

Common Security Risks at Construction Sites

Construction sites face a variety of security risks and challenges that must be addressed to ensure the safety of both employees and property. Understanding these common risks is essential for implementing an effective security camera solution. Here are some of the major threats:

Unauthorized Access

Open and unfinished buildings often attract curious individuals unaware of the dangers present at a construction site. This poses a legal risk for the company if someone is injured. Employing security guards can help keep unauthorized people off the property, reducing the likelihood of accidents and preventing costly downtime from having to clean up after trespassers.

Worker Safety

The construction industry is inherently high-risk, with workers exposed to numerous hazards such as excessive noise, extreme temperatures, falls from heights, moving heavy equipment, and exposure to harmful substances like silica dust and asbestos. Workers must adhere to safety procedures for managing cables, materials, and tools to avoid creating unnecessary hazards. Comprehensive video surveillance across the site is essential to minimize these risks and ensure a safer working environment.

Robberies and Assaults on Employees

Criminals often target construction workers for their valuable tools and equipment. Ensuring that employees can leave the worksite safely at the end of the day is crucial. Encouraging workers to leave in groups and considering the employment of security guards to accompany them to their vehicles can help mitigate the risk of robberies and assaults.

Cybercrime

Construction companies handle sensitive data, including employee records and financial transactions, making them targets for cybercriminals. Protecting online data systems from breaches, such as phishing attacks and ransomware, is vital. Partnering with a security team experienced in cybersecurity can help implement robust measures to safeguard the company's digital assets.

Bad Weather

Weather risks in construction include the negative impacts that adverse weather can have on a project. Due to the increasingly unpredictable nature of extreme weather, it's crucial to consider weather risks to prevent significant costs and project delays. Hazardous conditions such as thunderstorms, heavy rains, strong winds, and extreme temperatures can disrupt construction activities. The outdoor nature of construction work makes it particularly vulnerable to natural disasters, highlighting the need for proactive weather risk management.

Benefits of Security Cameras for Construction Sites

Security cameras play a vital role in ensuring the safety and security of construction sites. They offer a range of advantages that enhance site security and management efficiency. Here are some key benefits of security cameras on construction sites:

 

Comprehensive Monitoring

Large construction sites often cover vast areas with multiple zones. Security cameras provide comprehensive monitoring, ensuring that all areas are under surveillance. This facilitates early detection of potential safety threats and abnormalities, contributing to a safer work environment.

Real-time Monitoring and Response

By connecting to a security monitoring center or using mobile surveillance devices, security cameras enable real-time monitoring and remote access. Site managers can view live video footage of the site at any time, allowing for immediate action when necessary. This capability is crucial for timely responses to emergencies and managing security incidents effectively.

Crime Prevention

The mere presence of security cameras acts as a deterrent to crime. Criminals are less likely to target a site that has round-the-clock surveillance. Visible security measures, such as cameras, reduce the risks of theft, vandalism, and other criminal activities, thereby protecting the site and its assets.

Evidence Collection and Investigation Support

Video recordings from security cameras serve as valuable evidence for investigating and resolving security incidents. In cases of theft, vandalism, or other criminal activities, site managers can review camera footage to determine the timing, location, and individuals involved. This supports legal enforcement and strengthens overall security management.

Employee Supervision and Safety Training

Security cameras can be used not only to monitor site safety but also for employee supervision and safety training. Recorded footage can be utilized to assess employee behavior and operational practices, identify potential safety hazards, and provide training and improvement opportunities. This helps enhance employees' safety awareness and adherence to safety protocols, fostering a safer and more efficient work environment.

Must-Have Features for Construction Site Security Cameras

When selecting security cameras for large construction sites, several key features are essential to ensure the system meets the site's specific security needs. Here are some crucial features to consider:

High Image Quality and Wide-Angle Lens

For large construction sites, cameras that provide high-resolution images and a wide field of view are essential. These features allow for capturing a broader area and monitoring different construction zones with clear details, ensuring no critical activity is missed.

Night Vision Capability

Security must be maintained around the clock, making excellent night vision capabilities a must. Cameras with superior night vision functionality ensure clear images in low-light conditions, providing continuous monitoring and security throughout the night.

Motion Detection and Alerts

Cameras equipped with motion detection can automatically detect activity and trigger alerts. This feature allows for timely notifications when individuals or objects enter the camera's surveillance range, enabling immediate action when necessary.

Waterproof and Durability

Construction sites are exposed to harsh environmental conditions. Cameras should be waterproof and durable to ensure proper functioning in various weather conditions and challenging on-site environments, providing reliable security coverage.

Remote Access and Real-Time Monitoring

Opt for camera systems that offer remote access, allowing site managers to view live video footage anytime, anywhere through the internet or mobile devices. This real-time monitoring capability enables quick responses to emergencies and security issues, enhancing overall site security.

Long-Term Storage and Backup

Large construction sites often require extended video storage for playback and investigations. Selecting camera systems with sufficient storage capacity and backup functionality ensures that critical footage is available when needed for review or evidence.

Ease of Installation

Construction sites are dynamic environments that often require changes to camera placements as the project progresses. Security cameras should be easy to install and reposition, allowing for flexibility and adaptability as the site develops. This ensures optimal coverage and security throughout the construction process.

Best Security Camera Types for Jobsite Security

 

4GIPC P8 Wireless 4K Dual-Lens 180° Panoramic Camera

For those seeking wireless construction site security cameras to monitor job site environments, the4GIPC P8 wireless security camera for construction site is the ideal solution. This network camera features a 4K progressive scan CMOS sensor and a 4 mm fixed focal lens,and with support for IEEE802.11b/g/n connectivity. It offers a wide field of view, allowing you to focus on even the most minute details and quickly respond to relevant events. The 4GIPC P8 security camera kit is also a portable jobsite camera kit that included Wall-mount bracket and pole-mount bracket ,4G LTE Cellular router (SIM card purchased separately) and DC12V power adapter. It can be installed at the front door or entrance of a job site to detect movement, misuse or attempted theft, even at night It also delivers clear video.

IPTZ544D-25X PTZ Camera

PTZ cameras are suitable for use in public areas in construction site scenarios and are ideal for protecting construction site safety. The IPTZ544D-25X camera is equipped with super HD 4MP resolution and varifocal 4.8-120mm lens, which can achieve 360° panoramic coverage without blind spots, the security camera can be installed on the ceiling to achieve a complete 360° panoramic monitoring of the entire room and powerful 25x optical zoom function allows you have broad field of view, but also focus with the finest detail, let you immediately pay attention to related events. 

 

IPC575-AFM Dome Camera 

The IPC575-AFM is a 5MP dome PoE security camera with 98ft smart infrared night vision that can generally be used in warehouse environments on construction sites. The IPC575-AFM security camera offers 120dB True WDR and IR illumination with a 2.8 to 12 mm varifocal lens. Designed for durability and resiliency, the camera has an IP66 dust and water resistance rating and IK10 vandal resistance. In addition, this construction site security camera has intelligent perimeter and super dynamic detection functions. It supports four deployment modes: cross-border detection, entering area, leaving area, and area intrusion. Able to minimize false alarms caused by environmental factors.

 

IPC206A Bullet Camera

The IPC206A bullet camera is a cost-effective camera ideal for monitoring entire construction sites. IPC206A construction site security camera with 6MP resolution, built-in microphone, fixed 2.8mm lens, 98ft night vision, IP66 weatherproof, making it ideal for protecting most construction sites. It supports four deployment modes: cross-border detection, entering area, leaving area, and area intrusion.  It can classify and detect and deploy motor vehicles, non-motor vehicles, and pedestrian targets.  This PoE IP camera uses a single cable to transmit data and power, eliminating the need for messy wiring. Even beginners can set it up in minutes.

 

IPC208C Bullet Camera

The IPC208C 4K bullet security camera features wide dynamic range, 100ft infrared night vision and an IP67 rating, making it ideal for installation at construction site entrances and exits and can operate in low-light environments or in the dark. With Digital WDR, the camera delivers high-quality images with clear details and accurate color reproduction, even in challenging lighting conditions. Pairing this security camera with a compatible HD NVR instantly enhances job site security, giving you a peace of mind monitoring experience. It also has perimeter protection and intelligent people flow statistics functions to monitor people flow and crowd density, enhancing the camera's crowd management application functions.

dynamic-detection-function

 

IPC3340 Turret Camera

The IPC3340 security camera is commonly used in office areas or reception areas on construction sites. This full HD 4MP turret camera uses a 4-megapixel progressive scan CMOS sensor and a motorized fixed 2.8mm lens that supports intelligent infrared fill light for more uniform nighttime images, night vision distance up to 30m (98ft), and true WDR technology for clear images in strong light scenes. At the same time, it also has an IP67 protection level to ensure longer service life.

Why Choose Linovision Construction Site Security Solution?

LINOVISION has an expert team dedicated to providing security systems specifically designed to meet the unique needs of construction sites. Our extensive experience in construction site security solutions enables us to offer proactive, intelligence-driven security cameras that help protect construction sites, ensure worker safety, and assist management in tracking progress and deliveries.

 

Comprehensive Security Solutions

Linovision offers a comprehensive range of security cameras, network equipment, and facial recognition terminals specifically designed for construction sites. Our products include:

  • Security Cameras: Bullet cameras, dome cameras, turret cameras, and fisheye cameras to meet various security needs.
  • Network Equipment: Enterprise switches, PoE+ switches, and NVRs to manage the construction site office environment and CCTV centers.
  • Facial Recognition Terminals: All-in-one terminals for body temperature detection and face comparison at entrances and exits.

Our team will help you select the most suitable products based on the specific characteristics and requirements of your construction site.

Advanced Intelligent Analysis

Our security solutions utilize advanced intelligent analysis algorithms with identification and alert functions. These features allow for immediate detection and response to any abnormalities, such as break-ins, thefts, or emergencies like fires. Our systems can send alerts to notify relevant personnel, ensuring quick and effective action.

Efficient Management

Linovision’s VMS and mobile applications support remote monitoring, allowing you to view real-time images of the construction site from your mobile phone or computer. Features include:

  • Multi-Channel Display: Monitor multiple sites on one screen.
  • VCA Smart Search: Easily find footage by date, event type, and tags.

These capabilities facilitate efficient site management and ensure comprehensive security coverage.

Technical Support and After-Sales Service

Linovision is committed to providing excellent technical support and after-sales service. Our experienced technical team offers quick responses and solutions to any problems encountered during installation, configuration, or use. We strive to ensure that your construction site security system operates smoothly and effectively.

Summary

Investing in construction site security cameras is a wise decision. Linovision’s security cameras and video surveillance systems offer proactive threat detection, reducing the risk of theft and vandalism. Choosing the right security camera system is crucial for ensuring site safety. Our solutions provide real-time monitoring, extensive coverage, intelligent intrusion defense, and customized report analysis, helping you detect and respond to potential security threats promptly.

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IP Cameras vs Analog Cameras, What Are the Differences?

Tom Yao

In the realm of security and surveillance, the ongoing discussion surrounding IP cameras versus analog cameras holds significant importance for both businesses and homeowners. The choice between an IP camera system and a traditional analog setup can have a profound impact on the effectiveness and scalability of your security measures. This article aims to explore the distinctions between these two prevalent camera types, empowering you to make an informed decision that aligns with your specific surveillance requirements.

Understanding IP Cameras and Analog Cameras

Internet Protocol (IP) cameras refer to all the digital video cameras that can send and receive data via an IP network. They are widely used as video surveillance cameras, and they come in varying designs and capabilities. Some IP cameras need the support of a network video recorder (NVR) for recording and video/alarm management. However, others operate without an NVR, meaning they can record directly to a remote or local storage media. To read more: Technical Guide to IP Cameras - Overview, Types, Applications.

IP cameras encompass all digital video cameras capable of transmitting and receiving data through an IP network. They are widely employed as video surveillance cameras, available in various designs and functionalities. Some IP cameras necessitate the support of a network video recorder (NVR) for recording and managing video and alarms. However, others can operate independently without an NVR, enabling direct recording to local or remote storage media. For further information, please refer to the "Technical Guide to IP Cameras - Overview, Types, Applications."

On the contrary, analog cameras capture images, convert them into analog signals, and transmit them over a coaxial cable to a digital video recorder (DVR). The DVR then converts the analog signals into digital format, compresses the files, and stores them on a hard drive. Below, you will find a comprehensive comparison between an IP camera and an analog camera.

Advantages of IP Cameras

IP cameras provide superior resolutions and scalability, making them ideal for environments that demand comprehensive surveillance coverage over large areas. The transition towards IP-based surveillance has been predominantly influenced by the following factors:

1.Enhanced Resolution and Image Quality: IP cameras generally offer resolutions that surpass those of analog cameras by several magnitudes, resulting in sharper and more detailed images. With the availability of resolutions surpassing 4K, IP cameras deliver the level of clarity necessary for meeting stringent security requirements.

Analog Cameras VS IP Cameras

2. Seamless Integration and Advanced Functionality: By leveraging digital networks, IP cameras have the ability to seamlessly integrate with existing IT infrastructure and services, including cloud storage and sophisticated surveillance software. They offer a wide range of analytical capabilities, such as object recognition, perimeter breach alerts, and other intelligent analytics that leverage video data more efficiently. On the other hand, analog cameras generally lack support for advanced analytics but fulfill basic surveillance functions, such as video recording and live monitoring.

Human Detection
3. Scalability and Flexibility: Thanks to their network-based infrastructure, IP cameras offer effortless integration into existing systems. They support expansive and adaptable surveillance ecosystems that can expand and evolve over time without being constrained by physical connections.
4. PoE Support: IP cameras often have the capability to receive power through the same cable used for data transmission (Power over Ethernet), simplifying installation and reducing the complexity of wiring. This feature eliminates the need for additional power supply units and enables more straightforward and neater setups. In contrast, analog cameras typically require separate power connections.
5. Remote Access: One of the most desirable attributes of IP cameras is the ability to remotely view and manage surveillance footage. Users can access live and recorded videos via internet-connected devices from anywhere in the world, ensuring continuous monitoring and oversight.
6. Advanced Data Protection: IP cameras offer enhanced data protection through encryption and secure network transmission. This ensures that the crucial footage they capture is less susceptible to interception or unauthorized access, addressing a significant concern associated with the more vulnerable transmission methods of analog systems.

Advantages of Analog Cameras

  1. Cost-Effectiveness: One of the primary advantages of analog cameras is their affordability. The initial investment for analog surveillance equipment is typically lower compared to IP-based systems, making them an attractive option for budget-conscious users or smaller-scale operations.

  2. Simplicity and Ease of Use: Analog systems are often considered less complex to install and operate. With a straightforward setup that doesn't require in-depth knowledge of IT infrastructures, analog cameras can be an excellent choice for those seeking a basic yet effective surveillance system. In contrast, IP cameras may have a steeper learning curve for users who are unfamiliar with network technology.

  3. Wide Compatibility: Analog cameras have been in use for decades, leading to a widespread standard of system compatibility. This advantage is particularly valuable when upgrading existing systems, as existing wiring can be reused for new analog cameras.

  4. Low Bandwidth Requirements: Unlike IP cameras, which transmit large amounts of data over a network, analog cameras do not consume significant bandwidth. This results in a lighter load on your network infrastructure and potentially reduced ongoing operational costs.

IP Cameras vs. Analog Cameras: Which is ideal for your business?

Deciding between IP cameras and analog cameras for your business depends on finding the right balance between quality, cost, and ease of use. IP cameras may be the preferred choice if you require high-resolution footage, scalability, and integration with cutting-edge technology. However, if budget constraints are a significant factor and your current infrastructure supports it, analog cameras offer reliability without the need for an extensive overhaul. Ultimately, aligning your selection with your operational needs and financial capacity will ensure a secure and efficient surveillance environment for your business.

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Unlocking the Secrets of PoE Switches — A Complete Guide

Tom Yao

Power over Ethernet (PoE) switches have gained significant popularity as a practical solution for businesses seeking to conveniently deliver power and data through a single connection. In this comprehensive guide, we will delve into the various types of PoE switches, highlight their advantages and applications, and provide insights on selecting the most suitable PoE switch to meet your specific requirements.

What is a PoE Switch?

A PoE switch combines the functionalities of a switch and a power source into a single device. Equipped with multiple Ethernet ports, these switches facilitate seamless connections with various devices such as VoIP phones, wireless access points, and IP cameras. By integrating power delivery capabilities, PoE switches eliminate the need for separate power cables, streamlining installations. These switches prove particularly beneficial in network deployments where power outlets are limited or in scenarios where devices are situated in challenging-to-access locations.

PoE switches leverage the power over Ethernet (PoE) technology, enabling the simultaneous transmission of data and electrical power through Ethernet cables. This innovative technology employs a combination of power sources and power injectors to deliver power to connected devices. Acting as intermediaries between the power source and the devices, power injectors handle the transmission of both data and power, ensuring efficient operation. Also Check- PoE switch

 


Types of PoE Switches

When selecting a PoE switch, it is vital to familiarize yourself with the various types available. There exist two primary categories of PoE network switches:

The Unmanaged PoE Switch

Designed for simplicity and ease of use, the unmanaged PoE switch offers a plug-and-play solution that suits smaller setups. It requires minimal configuration and is user-friendly. However, it lacks extensive customization options, management features, and advanced security capabilities. Consequently, it is best suited for applications with uncomplicated network requirements, such as home networks or small-scale environments comprising fewer than 5-10 computers.

The Managed PoE Switch

Engineered to deliver enhanced control and comprehensive network management, managed PoE switches excel in scenarios that demand advanced functionality. With their robust security features and extensive configuration options, they prove ideal for applications like enterprise networks, data centers, and large-scale surveillance systems. These switches offer features such as VLANs (Virtual Local Area Networks), QoS (Quality of Service), port mirroring, and heightened port security, catering to complex networking requirements.

Advantages of PoE Switches

Given how PoE switches work, the benefits of PoE switches are obvious.

Simplified Installation: PoE network switches are known for their user-friendly installation and configuration. With plug-and-play functionality, these switches eliminate the need for complex wiring or intricate setup procedures. Built-in features like port mirroring, VLANs, and QoS further simplify network management tasks, enhancing overall operational convenience.

Cost Efficiency: PoE switches exhibit remarkable energy efficiency. By intelligently delivering the precise power required for each connected device, they eliminate the need for oversized power supplies. This efficient power allocation not only reduces energy consumption but also contributes to long-term cost savings, making PoE switches a financially advantageous choice.

Enhanced Flexibility: The ability to power devices through PoE enables easy relocation to areas without available power outlets. This flexibility allows PoE switches to be conveniently placed in challenging-to-reach locations or areas distant from power sources. Security cameras, for instance, can be strategically installed in optimal positions, regardless of the availability of nearby power outlets.

Future-Proofing: With the rapid growth of the Internet of Things (IoT) industry, PoE switches provide future-ready infrastructure. By incorporating PoE switches into your network, you can seamlessly accommodate the increasing number of devices designed to leverage this technology. This scalability ensures long-term compatibility and positions your network for seamless integration with emerging IoT devices.

 

PoE Switch Applications

This rapid expansion of network-connected devices means that PoE technology and PoE switches will grow in importance to most networking infrastructures. While PoE switches have numerous applications, we mainly discuss the three most common application scenarios.

  • VoIP Phones: VoIP phones are PoE devices, with PoE allowing for a single connection to the wall socket and the ability for remote powering down

  • IP Cameras: Security cameras can be connected to PoE switches to enable fast deployment and simple repositioning.

  • Wireless: Many wireless access points are PoE compatible. Thus, PoE switches allow for easy relocation and remote positioning.

  • Smart Home Automation: LED lighting, heating and cooling systems, appliances, voice assistants, and electric car charging stations.

How to Select the Right PoE Switch

When selecting a PoE switch, it is important to consider your application requirements, the features and limitations of the PoE network switch. Of course, the power requirements of connected devices are also important. Some PoE network switches are designed to power devices that require up to 30 watts, and some are even designed for power devices that require up to 60 watts.

Features of PoE Switches to Consider

In addition to the type of switch and power requirements, there are a number of features to consider when selecting a PoE switch. These features include port speed, port count, port types, PoE budget, power savings, and port security.

  • Port speed: Maximum speed a port can achieve. It is important to choose a switch with a port speed that can support the connected devices. The port count is the number of ports available on the switch. It is important to choose a switch with enough ports to accommodate all of the connected devices.

  • Port type: Common port types include RJ45, SFP, and SFP+. It is important to choose a switch with the right port type for connected devices.

  • PoE budget: Maximum amount of power that can be allocated to connected devices. It is important to choose a switch with a PoE budget that can accommodate all of the connected devices.

  • Power savings: Designed to conserve energy by automatically turning off unused ports. This can help to reduce energy costs. 

  • Port security: Designed to protect connected devices from unauthorized access.

Limitations of PoE Switches

Nonetheless, there are some limitations to PoE variation that you should be aware of:

  • Restrictions on distance: Typically, PoE switches can transmit over Ethernet up to a distance of up to 100 meters. The 100-meter distance restriction presents a challenge for large campuses, restaurants, and businesses implementing PoE. However, there are still devices like power extenders and powered fiber cables that can be used to extend the PoE range.

  • Power: If you require high power over poe networks, you must ensure that the power capacity of your PoE switches meets your requirements due to the power limitation imposed by PoE standards and Wattage.

 

FAQs about PoE Switch

Q: Non-PoE vs. PoE Switch: How do they differ?

A: Non-PoE switches cannot deliver power to connected devices, necessitating the use of midspan power sourcing equipment (PSE), such as a PoE injector. This setup adds power while transmitting data to powered devices (PDs). In contrast, PoE switches offer a simpler solution, directly delivering power and data to PDs with just a network cable and a power cable.

Also Check- PoE vs PoE+ vs PoE++ Switch: How to Choose?

 

Q: Do PoE Switches Require Special Cables?

A: No. The Ethernet cables that should be used for PoE network switches primarily depend on the data rate of the PoE port; for instance, Cat3 or better cables can be used for 10/100M; Cat5/Cat5e/Cat6 cables are required for 1000M. In the future, Cat6a or higher cables may be required for the installation of 2.5G/5G/10G PoE devices.

 

Q: Active vs Passive PoE Switch: Should I Choose Active or Passive PoE Switches?

A: Active PoE network switch complies with standard PoE. On the contrary, passive PoE network switch does not adhere to any IEEE standard. There are many ways that active and passive PoE switches differ from one another, like how the PoE power supply pinout looks and whether or not they support Ethernet.

 Also Check- Active vs. Passive PoE Switch: Which Should We Choose?

 

Q: Can the PoE Switch be used with a computer or other non-PoE devices? And will a PoE switch harm devices that do not use PoE?

A: Yes, a PoE switch can be used with non-PoE devices like computers. The switch automatically detects whether a connected device is PoE-compatible and will only supply power to PoE-enabled devices. So, it won't harm non-PoE devices; they just won't receive power through the switch.

 

Q: Is it possible to connect two PoE switches?

A: You could, yes. The PSE only supplies PD with power when it determines that the device can handle it. As PSEs, the two PoE switches will only be used for data communications.

 

Q: What is the maximum transmission distance of PoE? How to extend the transmission distance of PoE?

A: Whether using IEEE 802.3af (PoE) or 802.3at (PoE+), data and power transmission are limited to a distance of 100 meters over Ethernet cables in standard PoE. Media converters and PoE extenders, for example, can extend the range to up to 300 meters if you want to increase the maximum distance.

Conclusion

PoE switches are an effective solution for businesses looking to provide power and data over a single connection. They can simplify installation, reduce clutter, and improve energy efficiency. When selecting a PoE network switch, it is important to consider your application requirements, the power requirements of the connected devices, and the features of the switch. It is also important to consider the cost and long-term cost savings of using a PoE network switch.

If you are looking for a reliable and cost-effective PoE switch, check out Linovision PoE Switches.

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What Is PoE Splitter and How Does It Work?

Tom Yao

Power over Ethernet (PoE) is a technology enabling power source equipment (PSE) to provide electrical power and data simultaneously to powered devices (PDs) via a network cable. PoE network brings many advantages such as flexibility, cost-saving, reliability to installations where there is no power sources near the PDs. When it comes to PoE PSE devices, PoE splitter is supposed to be on the list. This post aims at helping you to understand what PoE splitter is, how PoE splitter works, how to choose and use it, and some FAQs about it.

What Is a PoE Splitter

PoE splitters are the devices that are used together with PoE switches and PoE injectors. Instead of taking both data input and power input and turning them into a singular output, they supply power by splitting the power from the data and feeding it to a separate input that a non-PoE compliant device can use. As shown in figure 1, there are two output cables on one side of PoE splitter: one supplies data and the other supplies power. In general, PoE splitters are often used in the scenario when there are remote non-PoE devices with no nearby AC outlets.

 

How Does a PoE Splitter Work

There are two situations when PoE splitter is used in a network: One is the network in which PoE switch and non-PoE devices to get powered requires a connection; another is the network in which data is sent through non-PoE network switch or router connecting with PoE compliant or non-PoE compliant end devices.

As shown in the following figure, the power sourcing equipment—the PoE switch provides power source via the Ethernet cable. In this situation, the input cable of PoE splitter can connect with the switch directly. One output line supplies data and the other power. When a splitter receives a unified PoE signal, it then separates the data and power into the two different lines to the non-PoE end devices such as IP cameras and wireless access points.

 

 

If there happens to be a mixture of compatible and non-compatible PoE devices, the PoE splitter should never be connected with the non-PoE switch directly but seek the aid from a PoE injector to provide power. For example, in the figure below, a PoE splitter is connected with a PoE injector so that the power and data can be sent to the camera in the end.

 

 

How to Install a PoE Splitter

Generally, PoE splitters are needed when the devices you'd like to power such as IP cameras, VoIP phones, WiFi radios, and IP door readers are not PoE compliant. Here using PoE splitter to install a non-PoE IP camera in a network including PoE switch is taken as an example.

Installations can be easily completed in minutes. Before the installation, a PoE splitter, a PoE network switch, an IP camera, UTP cables are prepared. The PoE splitter used in this example is Linovision PoE splitter cable with DC 12V output.

Step 1: Connect the two output cables of FS PoE splitter to the interfaces of IP camera, one for power transfer and the other for data.

Step 2: Connect one end of UTP cable to the input interface of PoE splitter and another end of UTP cable to the Gigabit RJ45 port of the switch.

After all of this, the data and power will be transferred to the IP camera.

PoE Splitter Buying Guide

If you are stuck in choosing a PoE splitter, here is a PoE splitter buying guide to help you out.

First and foremost, you should make sure the PoE splitter you want to buy can co-work well with the powered devices in your network. Generally, the PoE splitters on the market conform to IEEE 802.3af/802.3at standards. PoE splitters can be powered by an 802.3af PoE input if the total output is less than 15.4W, or they can be powered by an 802.3at input if the total output required is less than 30W. The input voltage of powered devices should match these specifications and not exceed the output of PoE splitter. What's more, make sure the PoE standard compatibility of PoE splitter with other 802.3af/at PoE-compliant network switch or injector.

PoE Splitter FAQ

PoE splitter vs injector: What’s the difference?

Both PoE splitter and PoE injector are frequently used power device, however, they go in the opposite direction. A PoE injector, also commonly known as midspan, adds power to data that is coming from a non-PoE switch or “endspan”. It supplies power through the network cable to PoE equipment such as wireless AP. A PoE splitter also supplies power to the device however the main difference is that it splits the power from the data to a separate input that the device can use. For more information, please refer to PoE PSE Comparison: PoE Switch vs. PoE Injector vs. PoE NVR vs. PoE Media Converter.

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What Is Power over Ethernet and How to Add PoE to Your Network?

Tom Yao

With the wide application of VoIP phones, IP cameras, and wireless access points, Power over Ethernet (PoE) has made great strides in recent years. And PoE network is expected to expand rapidly in the future due to the increasing number of IoT applications and smart device deployments and newly ratified standards designed to support more smart devices. In this article, we will provide an introduction covering various aspects of PoE such as PoE wiki, PoE standards, PoE types, PoE classes, and PoE applications.

What Is Power over Ethernet (PoE)?

PoE is a networking technology that can transmit both data and power over one single standard Ethernet cable. It allows us to use network cables such as Cat5/Cat5e/Cat6/Cat6a cables to provide data connections and electric power to wireless access points, IP cameras, VoIP phones, PoE lighting and other powered devices (PDs). With the use of PoE technology, we can easily deliver power to indoor or outdoor PDs without the need to install additional electrical infrastructure or to deploy power outlets at every endpoint.

 

Benefits of PoE Network—Why Use Power over Ethernet?

Besides the above-mentioned benefits, there are several more appealing reasons for adopting PoE in networking.

Time & Cost Saving: By using PoE in the network, we do not need to deploy electrical wiring and outlets for terminal PDs. This will help to save much power cabling cost especially when there are lots of PDs in the network. Furthermore, there is no need to hire a qualified electrician for the PoE network, so you may also save both time and money on electrical installations.

Flexibility: Since Ethernet network cables are easier to deploy than electrical ones, PoE networking allows us to install PDs nearly anywhere rather than near the electrical outlets. This offers a ton of flexibility for setting up and repositioning terminal devices.

Reliability: PoE power comes from a central and universally compatible source rather than a collection of distributed wall adapters. It can be backed up by an uninterruptible power supply (UPS) or controlled to easily disable or reset devices. By doing so, the PDs will run as usual even though Power Sourcing Equipment (PSE) breaks down.

Evolutionary Path of the Power over Ethernet (PoE)

Institute of Electrical and Electronics Engineers (IEEE), Cisco, and the HDBaseT Alliance have released several standards to define PoE. These standards include IEEE 802.3af, IEEE 802.3at, IEEE 802.3bt, Cisco UPOE, and Power over HDBaseT (PoH).

Evolutionary Path of the Power over Ethernet (PoE)

PoE Types

Due to different classification standards, PoE can be divided into different types. Currently, there are 4 PoE types based on IEEE PoE Standard: Type 1(IEEE 802.3af), Type 2(IEEE 802.3at), Type 3(IEEE 802.3bt), and Type 4(IEEE 802.3bt), as shown in the following chart.

PoE Types

PoE vs. PoE+ vs. PoE++ (UPoE )vs. PoH

PoE (IEEE 802.3af), also known as PoE type 1, provides up to 15.4 watts of power per port and is used for devices like IP phones and cameras. PoE+ (IEEE 802.3at), PoE type 2, offers up to 30 watts and powers devices like PTZ cameras. PoE++ or UPoE (IEEE 802.3bt), also referred to as PoE type 3, delivers up to 60 watts and 100 watts, PoE type 4, per port for high-performance devices. Power over HDBaseT (PoH) enables power and data transmission for AV equipment over a single cable. The figure below illustrates the common applications of different PoE types for your reference.

PoE vs. PoE+ vs. PoE++ (UPoE )vs. PoH

PoE Classes

Power over Ethernet (PoE) classes define standardized power levels for different network devices. These classes ensure compatibility between Power Sourcing Equipment (PSE) and Powered Devices (PD).

The classes, ranging from Class 1 to Class 8 as the above chart shows, correspond to specific IEEE standards, indicating the maximum power output of the PSE and the maximum power input of the PD. Let’s delve into more details about each class:

PoE Classes

Class 1 is suitable for low-power devices such as IP phones, voice-over-IP (VoIP) devices, and basic sensors.

Class 2 is intended for devices that require slightly higher power, including wireless access points, small IP cameras, and IP intercom systems.

Class 3 is commonly used for devices that require moderate power, such as larger IP cameras, point-of-sale systems, and access control devices.

Class 4 provides increased power delivery capabilities and is suitable for power-hungry devices like pan-tilt-zoom (PTZ) cameras, video phones, and thin clients.

Class 5 introduces the support for four pairs of Ethernet wires, enabling higher power transmission. It is designed for devices with more demanding power requirements, including advanced PTZ cameras, multi-channel wireless access points, and small LED lighting systems.

Class 6 provides increased power delivery capabilities beyond the previous classes. It can support devices like high-power pan-tilt-zoom cameras, multi-radio wireless access points, and small LCD displays.

Class 7 offers even higher power capabilities introduced with the IEEE 802.3bt standard. It is suitable for devices like high-performance access points, large displays, and thin clients requiring substantial power.

Class 8 represents the highest power class defined by current PoE standards. It is designed for power-hungry devices such as video conferencing systems, advanced lighting systems, and digital signage

It’s important to note that the power levels specified for each class represent the maximum allowable values, and the actual power delivered or consumed by the PD may vary based on its specific power requirements and negotiation with the PSE. Besides, understanding PoE classes allows network administrators to ensure that the power requirements of their devices align with the capabilities of their PoE infrastructure, ensuring proper operation and avoiding potential power supply issues.

Passive PoE vs. Active PoE

Power over Ethernet can also be divided into passive PoE and active PoE in general. Active PoE is the standard PoE which refers to any type of PoE that negotiates the proper voltage between the PSE and the PD device. Passive PoE is a non-standard PoE technology. It can also deliver power over the Ethernet line but without the negotiation process.

How to Add PoE to Your Network?

The PoE supplied in the network generally comes from three different sources: PoE switch, PoE injector, and PoE splitter. The PoE switch is the easiest way to power up the PDs. You only need to run Ethernet cables from a PoE network switch port to the terminal PoE device. A PoE injector is used when there is no PoE switch in the network. It has an external power supply and is responsible to add power to data that is coming from a network switch that is not PoE-capable. PoE splitters also supply power, but they do so by splitting the power from the data and feeding it to a separate input that a non-PoE-compliant device can use. It is commonly used for deploying remote non-PoE devices with no nearby AC outlets in the network.

 

Common FAQs on PoE Network

Q: What is the voltage of Power over Ethernet?

A: Power over Ethernet is injected onto the Ethernet cable at a voltage between 44v and 57v DC, and typically 48v is used. This relatively high voltage allows efficient power transfer along the cable, while still being low enough to be regarded as safe.

Q: What data speed does PoE offer?

A: Generally, PoE can deliver data rates at 10/100/1000Mbps over Cat5, Cat5e and Cat6 cables. Now thanks to the widespread IEEE 802.3bt PoE standard and PoE++ technology, PoE is able to deliver speeds of 2.5 Gbps to 5 Gbps over 100m and reaches 10 Gbps in recent times.

Q: Are there any limitations of PoE network?

A: Yes, PoE network does have some pesky limitations. First, it has a restricted reach of 328 feet (100 meters) which limits the viable locations where users can operate a remote IP-enabled device. Second, a single PSE such as a PoE switch usually connects to multiple PDs. If the PSE broke down, all the PDs will stop working. Therefore, it is important to buy qualified switches from a reliable supplier. In addition, you may also consider connecting the PSE to an uninterruptible power supply system.

Q: What are PoE midspan and PoE endspan?

A: The PoE midspan is usually a PoE injector that serves as an intermediary device between a non-PoE switch and the terminal PoE-capable powered device. A PoE endspan, which is commonly called the PoE network switch, directly connects and supplies both PoE power and data to a PD. PoE endspan provides power over the data pairs, also known as PoE Mode A. PoE midspan provides power using the pins 4-5 and 7-8, also known as PoE Mode B.

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How to Connect Linovision LoRaWAN Gateway to HTTP(s) Server?

Tom Yao

Description

Linovision LoRaWAN gateways support sending data packets to third party MQTT/HTTP/HTTPS server. We can create a new application on gateway, which can define the method of decoding the data sent from LoRaWAN end-device and choosing HTTP(S) data transport protocol to send data to HTTP(s) server.

 

 

 

Requirement

  • Linovison LoRaWAN Gateway: IOT-G6x, IOT-G8x
  • HTTP/HTTPS Server

 

Configuration

Step1. Enable the gateway built-in network server.

Go to Packet Forwarder > General to enable the localhost server address.

 

 

Enable the Network server on Network Server > General page.

 

 

 

Step2. Add an Application and Profiles.

Go to Network Server > Applications to add a new application, then click save.

Name: user-defined, arbitrary value

Description: user-defined, arbitrary value

Payload Codec: None or custom your decoder

 

 

Go to Network Server>Profiles to add a new profile, then click save.

Name: user-defined, arbitrary value

Max TXPower: default value

Other parameters can be checked from LoRaWAN nodes user guides or you can keep all settings by default.

 

 

 

Step3. Add LoRaWAN nodes to the gateway.

Go to Network Server > Device, add a new device, click save&apply.

Device Name: user-defined, arbitrary value

Description: user-defined, arbitrary value

Device-Profile: choose one of corresponding profiles added before.

Application: choose one of corresponding applications added before.

Other values can be confirmed with the LoRaWAN node manufacturers.

 

When the status of it is “activated”, that’s mean above steps are done correctly.

 

 

 

Step4. Forward data to HTTP(s) server.

Go to Network Server > Applications to add a “data transmission” for the application.

 

 

Fill in the HTTP(s) URL information for each data type, click save.

Uplink data: the URL address to receive all uplink data.

Join notification: the URL address to receive join notification.

ACK notification: the URL address to receive all ACK notification.

Error notification: the URL address to receive all error notification.

 

 

Note: If there is user credentials when we access to HTTP(s) server, please add HTTP header, and fill in correct account and password.

 

 

If we get data packet on the corresponding URL of HTTP server like below, that’s mean we have connected with HTTP server successfully.

 

 

Note: The difference of forwarding data to HTTPS server is that you need upload related gateway certification on your HTTPS server (Contact Linovision to get certification).

 

FAQ

Q1. Why did the server not receive the data sent by the gateway?

A1: Go to Maintenance > Tools > Ping, confirm the gateway can ping to the HTTP address you filled in successfully like below, then check all of above values filled in are correct.

 

 

 

Q2. How to send decoded data packet to HTTP/HTTPS server?

A2: Refer to How to Use Payload Codec on Linovision Gateway.

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How to Remotely Control Devices via MQTT on Linovision Gateway

Tom Yao

Description

When working as embedded network server, Linovision LoRaWAN gateways support both sending data packets to third party MQTT/HTTP/HTTPS server or receiving the downlink commands to transfer to LoRaWAN end devices.

 

Requirement

  • Linovision LoRaWAN Gateway: IOT-G56, IOT-G63 V1, IOT-G65, IOT-G67, IOT-G8x (Firmware version 80.0.0.64 or later)
  • MQTT Server/Broker
  • MQTT Client tool: take MQTT Explorer as example

 

Configuration

Step1Connect gateway to MQTT broker.

Refer article How to Connect LoRaWAN Gateway to MQTT Broker?to connect gateway to MQTT broker and ensure the broker and MQTT client can receive uplinks from devices.

 

Step2Send Downlink Command from Gateway

Set the gateway to send downlink commands to device directly to check if the device can receive the downlink commands and take actions.

Device EUI: the device EUI to send downlink commands

Type: downlink command type. For Linovision devices, please select hex type.

Payload: downlink command content (get from device manufacturer). For Linovision devices, please refer to downlink command contents on corresponding user guides

Port: application port of device. It is 85 by default for Linovision devices.

Confirmed: after enabled, the device will send confirmed packet back to gateway if it receives the command. If not receive, the gateway will resend the downlink command 3 times at most.

Note: for class A type devices, the gateway will add the command to queue and send it when the class A device send uplinks.

 

 

 

Step3. Publish Topic on MQTT Explorer to send downlink data to device. 

Set a Downlink Data topic. If you need to send MQTT downlink to specific device, please add “$deveui” on the topic.

Example: /linovision/downlink/$deveui

  

 

Publish Topic Format :

/linovision/downlink/[devEUI]

Example :

From the gateway, we can get the device EUI about the device we want to control:

 

 

So we can publish a topic on the MQTT Explorer like below:

Topic: /linovision/downlink/24e124126a148401

Format: json

Content: 

send as below format and replace the data content as downlink command

{"confirmed": true, "fport": 85, "data": "CQEA/w=="}
JavaScript

 

After click Publish, we can go to Network Server > Packets to check. If the gateway have subscribe corresponding downlink topic data successfully, there will be at least one grayed message packet record.

 

 

Linovision Device Command Examples

The MQTT downlink command format is fixed as below:

{
"confirmed": true,       //Set as true or false
"fport": 85,            //application port of device
"data": "BwAA/w=="    //base64 format downlink command
}
JavaScript

For Linovision devices, click here to convert hex format command to base64 format. Here are Linovision controller common commands:

Model

Command

Command (Hex)

Command (base64)

IOT-C50x

Set GPIO1 low

Set GPIO1 high

Set GPIO2 low

Set GPIO2 high

030000ff

030100ff

040000ff

040100ff

AwAA/w==
AwEA/w==
BAAA/w==
BAEA/w==

IOT-C300

Set DO1 low

Set DO1 high

Set DO2 low

Set DO2 high

070000ff

070100ff

080000ff

080100ff

BwAA/w==
BwEA/w==
CAAA/w==
CAEA/w==

IOT-C11xx

Set DO1 low

Set DO1 high

Set DO2 low

Set DO2 high

090000ff

090100ff

0a0000ff

0a0100ff

CQAA/w==
CQEA/w==
CgAA/w==
CgEA/w==

 

----END---

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How to Connect LoRaWAN Gateway to MQTT Broker?

Tom Yao

Description

When working as embedded network server, Linovision LoRaWAN gateways support sending data packets to third party MQTT/HTTP/HTTPS server. We can create a new application on gateway, which can define the method of decoding the data sent from LoRaWAN end-device and choosing MQTT data transport protocol to send data to MQTT server.

 

 

Requirement

  •  LoRaWAN Gateway: IOT-G8x (Firmware version 80.0.0.64 or later), IOT-G65, IOT-G67, IOT-G56, IOT-G63 V1
  • MQTT Server/Broker
  • MQTT client tool: take MQTT Explorer as example

 

Configuration

Step1. Enable the gateway built-in network server.

Go to Packet Forwarder > General to enable the localhost server address.

 

 

Enable the Network server on Network Server > General page.

 

 

 

Step2. Add an Application

Go to Network Server>Applications to add a new application, click save.

Name: user-defined, arbitrary value

Description: user-defined, arbitrary value

 

 

 

 

Step3. Connect gateway to MQTT broker.

Go to Network Server > Applications to add a “data transmission” for the application. One application can add only one MQTT integration.

 

 

 

 

 

Fill in the MQTT broker information and create topic to store different data type, click save.

Broker Address: IP address/domain of MQTT broker

Broker Port: communication port of MQTT broker

Client ID: user-defined, a unique ID identity of the client to the server.

User Credentials and TLS should be enabled and configured as required.

Note: if MQTT broker is HiveMQ, please do enable TLS and set the option as CA signed server certificate.

 

 

After MQTT configuration complete, you can check connection status here:

 

 

Step4. Add LoRaWAN nodes to the gateway.

Go to Network Server>Profiles to add a new profile, then click save. You can also use pre-defined profiles.

Name: user-defined, arbitrary value

Max TXPower: default value

Other parameters can be checked from LoRaWAN nodes user guide or you can keep all settings by default.

 

 

 

Go to Network Server>Device to add a new device, click Save&Apply.

Device Name: user-defined, arbitrary value

Description: user-defined, arbitrary value

Device-Profile: choose one of corresponding profiles added before.

Application: choose one of corresponding applications added before.

Other parameters can be confirmed with the LoRaWAN node manufacturers.

 

 

When the status shows as below, that’s mean above steps are done correctly.

 

 

 

Step5. Add uplink data topic.

Customize the uplink data to publish to MQTT broker and save the settings. If you add “$deveui” on your topic, you can replace it as real device EUI when subscribing topics. 

Example: /linovision/uplink/$deveui

 

 

 

 

Step6. Subscribe topic from MQTT client to get uplinks.

MQTT explorer is a comprehensive MQTT client and it can be replaced to other kinds of MQTT client tools(MQTT.fx, MQTT Box, etc.)

Open the MQTT Explorer, and fill in related MQTT server information in the popup window.

Name: user-defined

Protocol: mqtt://

Host: MQTT broker address

Port: broker port

User name/Password: if there is user credentials, please fill in it. If not, keep them blank.

 

 

Click ADVANCED,copy the Uplink data topic on the gateway, and paste it on the MQTT explorer, click +ADD.

 

  

 

Keep MQTT client ID by default,then click BACK and click CONNECT.

 

 

After while, the data will be forwarded to MQTT broker and the MQTT Exploerer can receive the data from MQTT server.

 

The uplink format is fixed as json and the content is as below.

 

{
  "applicationID": 1,                   // application ID
  "applicationName": "cloud",           // application name
  "deviceName": "24e1641092176759",     // device name
  "devEUI": "24e1641092176759",         // device EUI
  "time": "2020-0327T12:39:05.547336Z", // uplink receive time
  "rxInfo": [                           // lorawan gateway information related to lora
    {
      "mac": "24e124fffef021be",        // ID of the receiving gateway
      "rssi": -57,                      // signal strength (dBm)
      "loRaSNR": 10,                    // signal to noise ratio
      "name": "local_gateway",          // name of the receiving gateway
      "latitude": 0,                    // latitude of the receiving gateway
      "longitude": 0,                   // longitude of the receiving gateway
      "altitude": 0                     // altitude of the receiving gateway
    }
  ],
  "txInfo": {                           // lorawan node tx info
    "frequency": 868300000,             // frequency used for transmission
    "dataRate": {
      "modulation": "LORA",             // LORA module
      "bandwidth": 125,                 // bandwidth used for transmission
      "spreadFactor": 7                 // spreadFactor used for transmission
    },
    "adr": false,                       // device ADR status
    "codeRate": "4/5"                   // code rate
  },
  "fCnt": 0,                            // frame counter
  "fPort": 85,                          // application port
  "data": "AWcAAAJoAA=="                // base64 encoded payload (decrypted)
}

 

 

If you need to send downlink commands from MQTT client, please refer to article How to Remotely Control Devices via MQTT on Linovision Gateway.

 

 

FAQ

Q1.How to send decoded or customize uplink content to MQTT broker?

A1:  Yes, this needs to use Payload Codec feature on the gateway. Reference articles:

IOT-G56/G65/G67: How to Use Payload Codec on Linovision Gateway

IOT-G63 V1/G8x: How to Use Payload Codec on Linovision Gateway (Old)

 

Q2.What’s the troubleshooting when the status of MQTT server connection is “Disconnected”.

 

 

A2: 

1) Go to Maintenance > Tools >Ping , check if the gateway can ping to the broker address successfully.

 

 

 

2) Check if your MQTT client tool can connect to MQTT broker well, then follow the settings of MQTT client tool to configure the gateway.
3) Check if the gateway MQTT client ID is conflict with other MQTT clients.
4) Check if CPU load is too high, and if there is little available RAM and eMMC.
5) Change the log severity to Debug and replicate the disconnection problem, then download all log files and send them to support@linovision.com.

 

 

 

Q3.Why the connection status shows “connected” but MQTT client does not receive any data?
A3:
1)Ensure the devices has been added to gateway and go to Network Server > Packets to check if there are uplink packets from devices regularly.
2) Ensure the devices has been added to the correct Application.
3) Ensure the gateway firmware is upgraded to latest version. 
4) Change the log severity to Debug and replicate the disconnection problem, then download all log files and send them to support@linovision.com.

 

 

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PoE Power Sourcing Equipment (PSE) FAQs

Tom Yao

To enhance comprehension of the PoE network system, it is essential to become acquainted with the PoE devices, as the initially published IEEE802.3af standard categorized Power over Ethernet (PoE) technology into two primary types of power devices: power sourcing equipment (PSE), which supplies power over the Ethernet cable, and powered devices (PD), which receive the power. Presented below is an introduction to power sourcing equipment and a selection of frequently asked questions.

Q: What Is PoE PSE?

A: PoE PSE, an acronym for Power Sourcing Equipment in Power over Ethernet (PoE) systems, represents the equipment responsible for delivering power to PoE PDs (Powered Devices). PoE PSEs detect and categorize the connected PoE devices, monitor power consumption, and allocate power to the devices based on their specific power requirements.

Q: What Are the Differences Between PoE PD and PoE PSE?

A: In a Power over Ethernet (PoE) system, two fundamental elements exist: PoE PD (Powered Device) and PoE PSE (Power Sourcing Equipment).

  • PoE PSE (Power Sourcing Equipment): PoE PSE denotes the equipment supplying power to PoE PDs. It can take the form of a PoE switch or a PoE injector. The PoE PSE injects power into the Ethernet cable, alongside data signals, enabling connected PoE PDs to receive both power and data through a single cable. It serves as the power source for PoE devices.

  • PoE PD (Powered Device): PoE PD refers to the device that draws power from the PoE network infrastructure. It encompasses various device types, such as IP phones, wireless access points, IP cameras, and network switches. The PoE PD consumes power from the PoE PSE, allowing it to operate without the need for a separate power source. Typically, it features an Ethernet input for data communication and a power input to receive power from the PoE PSE.

Q: What Are the Common PoE PSEs?

A: PoE PSE (Power Sourcing Equipment) is vital for providing power to PoE-enabled devices in a network. Although the variety of PoE PSE devices is more limited compared to the diverse range of PoE PDs, there are several commonly deployed types in modern PoE networks. These include PoE switches, PoE injectors, PoE NVRs (Network Video Recorders), and PoE media converters. Here is an overview of these commonly used PoE PSE devices:

 

  • PoE Switch: The PoE network switch integrates PoE injection, allowing it to transmit both data and power over a single Ethernet cable directly to the connected PD.

  • PoE Injector: PoE injector is used to add PoE capability to regular non-PoE network connections. It injects power into the data stream originating from a non-PoE switch and delivers both power and data to the PD via an Ethernet cable.

  • PoE NVR: PoE NVR (Network Video Recorder) incorporates built-in PoE injection. It is commonly employed in IP video surveillance systems, responsible for encoding and processing video data from IP cameras and recording it for storage and remote viewing. The PoE NVR can also supply power to IP cameras via Ethernet cables.

  • PoE Media Converter: PoE media converter facilitates the connection between fiber cabling and a copper network while concurrently providing PoE power to PoE PDs like IP cameras and VoIP phones.

  • PoE Splitter: The PoE splitter is capable of delivering power, but its primary function is to provide power to non-PoE terminal devices. It accomplishes this by splitting power from the data stream and delivering it to the non-PoE device through a separate power supply cable. PoE splitters are advantageous for deploying remote non-PoE devices without nearby AC outlets.

Q: Do I Still Need A PoE Injector if I Have a PoE Switch?

A: If you have a PoE switch, there is no requirement for a PoE injector. When utilizing a standard PoE switch, the power connection is already included, rendering the use of an injector unnecessary. However, if you are utilizing a non-PoE switch, a PoE injector becomes essential for supplying power to PoE PDs like IP cameras, as non-PoE switches do not provide power to PoE devices. It is worth noting that PoE injectors are typically suitable for smaller-scale PoE networks with only a few PDs. For networks with a larger number of PDs, opting for a PoE switch is a more advantageous choice.

Q: Can I Use A PoE Switch with NVR?

A: Yes, you can. A PoE switch not only functions as a hub but also has the capability to provide power to an NVR (Network Video Recorder) without requiring an external power source or additional power cables. This feature significantly reduces installation costs and simplifies cabling complexity, as both power and video can be transmitted over a single Cat5 cable.

Q: Can I Use a Media Converter with PoE Switch?

A: Certainly. It is true that PoE switches have a distance limitation of 100 meters for Ethernet cables. However, when we need to extend beyond this limit, a PoE media converter becomes an excellent solution. A PoE media converter addresses the distance challenge by providing a copper-to-fiber connectivity solution. It serves as the PoE PSE on the copper side, enabling the powering of PDs while extending the network over fiber optic cables to reach greater distances. This allows us to overcome the 100-meter limitation of PoE switches.

Q: Can I Use a PoE Splitter as a PoE Injector?

A: No, PoE splitters and PoE injectors are distinct types of PoE devices that can often lead to confusion. As mentioned earlier, PoE injectors are utilized with non-PoE switches to provide power to PoE devices connected to them. On the other hand, PoE splitters are used in conjunction with PoE PSEs (Power Sourcing Equipment) and separate the data and power signals onto separate cables for non-PoE devices.

To provide a clearer understanding, please refer to the accompanying figure which illustrates the typical applications of PoE splitters and PoE injectors:

Conclusion

With the increasing need for streamlined installations and the recent adoption of standards to support a broader range of smart devices, the adoption of Power over Ethernet (PoE) technology is anticipated to witness significant growth in the future. Consequently, it becomes crucial for us to gain a comprehensive understanding of the aforementioned PoE PSE devices, particularly when making purchasing decisions for establishing PoE networks. This knowledge will enable us to make informed choices and effectively build PoE infrastructure to meet our requirements.

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RS485 Modbus 7-in-1 Ultrasonic Weather Station

Tom Yao

IOT-S300WS7 is an ultimate all-in-one RS485 Modbus weather monitoring system for various and continuous atmospheric conditions including air temperature, relative humidity, barometric pressure, light intensity, rainfall(optical), wind speed, and wind direction (ultrasonic). It boasts high resolution and accuracy with rugged and aesthetic housing.

 

Outstanding Features

  • All-in-One Weather Station - This weather monitoring system is designed to monitor various and continuous atmospheric conditions, including air temperature, relative humidity, barometric pressure, light intensity, precipitation intensity, wind speed, and wind direction.
  • RS485 Compatibility - The output signal is RS485, the standard Modbus-RTU communication protocol, which supports changing the communication address and wave special rate and other functions. And RS485 support as far as 1200 meters communication. while supports secondary development and is widely used.
  • Ultrasonic Sensor - For precise measurement, the sensors to measure wind speed and wind direction use ultrasound instead of traditional mechanical 3-cup or vane anemometer.
  • Greater Stability - Radiation shields are equipped to ensure accurate ambient measurement.
  • Built-in Heater - Integrated heaters that can be switched on in extreme weather.
  • Embedded with the Electronic Compass - Magnetometer: enabling easy installation and you can choose to disable the electronic compass while orienting to the North manually.

Applications

  • Weather monitoring for agriculture, meteorology, forestry, ports, railways, schools, and buildings, etc.

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