Without any changes to the existing Ethernet cabling architecture, PoE technology enables a twist pair
copper cable to provide both data transmission and DC power to devices, such as wireless access points, VoIP
phones, network cameras, etc., which help realize the maximum network convergence of lighting system, voice
exchange system, sensor system, ventilation control system, building automation control system and
structured cabling system.
PoE standard has evolved from IEEE 802.3af to IEEE 802.3bt. This standard introduces new PoE Type 4 and
raises the power transmitted from 15.4W to maximum 100W, which could meet the demand for high-power
applications like LED lights, or even charging laptop batteries.