What Does IEEE 802.3bt PoE Bring To Life?

- Aug 03, 2020-

With the large-scale expansion of PoE-powered smart IoT networks worldwide, more and more high-power-consuming devices have emerged. Unfortunately, PoE technical standards like IEEE 802.3af/at are only suitable for powering low-power devices below 30W, which limits the available power of smart network devices.

Fortunately, the latest PoE standard IEEE 802.3bt has greatly expanded the application of PoE technology in new areas. PoE can provide up to 90W of power for power supply equipment (PSE) and 71.3W of power for terminal equipment (PD).

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01:Which devices need IEEE 802.3bt PoE?

With the rapid development of new services such as cloud desktop, WIFI6, AI PTZ cameras, digital signage, LED lighting, building automation and industrial sensors, high-power IP-based terminals such as smart LED lights, cloud desktop all-in-ones, and smart IP audio have emerged In our lives, these devices have power requirements ranging from 15W to 90W. bt PoE can output up to 90W power, and the IEEE 802.3bt standard can be backward compatible with the IEEE 802.3af/at standard, and it can support a wide range of equipment and applications.


1. PoE LED light

By using IEEE 802.3bt PoE equipment, it can provide 90W of power for LED lights, saving a lot of energy for owners or managers in the field of smart buildings. By using this standard, it reduces the minimum standby power (when the lights are off) to 20 MW, which is 10 times higher than what other existing standards allow (200 MW). By deploying the PoE power supply + light control module, the position of the human body can be sensed manually or automatically by infrared, so that local lights are on or off, and the lights are on when people come and the lights are off when people go. In addition, due to the safety of PoE, the safe installation and use of LED lights are also guaranteed.

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2. 90W PTZ camera

PTZ cameras are the latest equipment using PoE technology and are widely used in safe city construction projects. PTZ cameras consume a lot of power, in some cases up to 90W, the previous IEEE 802.3af/at standard cannot provide such a large power.

The use of bt PoE technology makes it possible for high-power PTZ cameras to adopt PoE power supply networking, thereby reducing wiring, saving energy, and greatly reducing the maintenance cost of the project.

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3. Wireless AP


As the access point for users of wireless devices (mobile phones, laptops, etc.) to enter the wired network, wireless APs are widely used in office buildings, campuses, parks, warehouses, factories and other places that require wireless networking. By adopting PoE technology, the Ethernet cable can connect various network devices in the building and supply power to devices such as wireless APs.

As users’ demands for high-performance wireless APs continue to rise, especially for applications that meet the IEEE 802.11ax and 802.11ac Wave 2 standards, in some cases, wireless AP devices require more than 30W or 60W power to work normally. At this time, it may require up to 90W or higher power to provide power to terminal devices (such as laptops). bt PoE technology satisfies the needs of high-power wireless APs.

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4. Visual intercom, TV and video conference, digital signage system, etc.

With 90W PoE power supply, users can operate power-consuming video intercoms, LED displays, VoIP telephone systems, etc. on the existing Ethernet infrastructure. While upgrading to the IEEE 802.3bt standard, digital signage and infrared lighting design are also excellent opportunities to save installation costs.

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At present, bt PoE technology has been extended from traditional WLAN, network video surveillance, IP phone and other application scenarios to smart buildings, smart retail, IoT (industrial Internet of Things), skynet engineering and other scenarios, reflecting low cost and convenient construction , Stable power supply, high operation and maintenance efficiency. Among them, the application of bt PoE technology in the field of intelligent buildings is more worth looking forward to.

02: IEEE 802.3bt PoE,Make smart life more efficient, safer and more energy efficient

There are a large number of information systems and IP equipment in intelligent buildings, LED lighting systems (indoor and outdoor), network systems (AP, routers, PCs), security systems (access control, IP cameras, PTZ cameras), sensors (collecting environment and household data) ) And others are the backbone of intelligent buildings. PoE makes the entire building system more intelligent, efficient, flexible and easy to manage.

In smart buildings, many subsystems and IP devices require power of more than 30W, so IEEE 802.3bt PoE devices are needed to drive them. bt PoE devices are compatible with all IP devices with power up to 60/90W.

Using bt PoE equipment for system networking and power supply can improve management efficiency, bring people a better office and living experience, and help realize health management, energy consumption management, and efficient office.

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Property managers can understand the energy usage of facilities as a whole through platform software, and improve energy utilization and operational efficiency by measuring, monitoring and controlling all nodes of the network. In addition, combined with smart sensors, individualized management can be realized according to different functional areas to save energy consumption. The use of bt PoE technology can reduce the total cost of ownership of intelligent building systems, reduce fire safety hazards, and improve the safety of intelligent buildings.

03:HRUI released a full range of bt PoE products

As a leader in the PoE switch industry, HRUI’s series of products supporting bt PoE technology have covered 90W bt PoE switches, 90W bt PoE power supplies and other products, and formed complete solutions, which are widely used in smart buildings, smart retail, education, Various industries such as medical treatment, transportation and energy.

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