What is Power over Ethernet (PoE)?
Aug 21, 2023
PoE refers to the ability to provide low-voltage (less than 100W,IEEE802.3bt), direct current (44-57V DC) electrical power to network devices via the same twisted-pair copper Ethernet cables that are used to transmit data. This eliminates the need for a separate AC power source and allows for more flexible placement options, without concern for proximity to a power outlet.
PoE is a low-cost, safety,reliable, and flexible approach to powering smart devices in a network. It is crucial to enabling smart buildings and their ecosystems of network-connected devices such as LED lighting, window shades, sensors.
What are the benefits of PoE LED lighting?
Using PoE to power low-voltage DC-powered LED lighting has many benefits over both traditional lighting options and newer AC-powered LED options.
Using low-voltage LED lighting alone can offer a dramatic reduction in energy required per lumen compared to incandescent and halogen equivalents. But using PoE to power and connect lighting has several significant advantages. It can:
Reduce up-front construction costs and time to completion when used for cabling, installation, and configuration. There is also a dramatic reduction in carbon footprint, since no conduit or high-voltage copper wiring need to be installed.
Lower capital expenditures, labor, and materials costs related to construction and maintenance.
Allow for greater flexibility in design and placement.
Enable the optimization and quantification of energy consumption by using the building's network as a sensor and interconnecting shades. This saves money and reduces carbon footprint.
Require less energy, run cooler, and be a smaller form factor since no AC/DC transforming or transformer is required.
Use pervasive 90W LEDCET Power Over Ethernet (POE++) to power, monitor, and control LED lighting, IoT devices.
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