PoE is called Power Over Ethernet, and PoE is also called LAN-based power over LAN (PoL, Power over LAN) or Active Ethernet. Sometimes it is also referred to as Power over Ethernet. The Ethernet transmission cable meets the power application requirements of power supply while transmitting data, and maintains compatibility with existing Ethernet systems and users.
Power over Ethernet (PoE) has become an important power strategy in the past decade. Based on this technology, network administrators, installers and integrators can use structured cabling to provide power and data to many network devices. With the rapid development of new services such as WLAN, VoIP, and network video surveillance, POE power supply has gradually become mainstream, but with the emergence of high-power applications for equipment, it is clear that 30W power supply power is difficult to meet demand.
Power is supplied through 10BASE-T, 100BASE-TX, 1000BASE-T Ethernet networks. The reliable power supply distance is up to 100 meters, and 10BASE-T1 can reach 1000 meters. In this way, remote centralized power supply can be provided for devices such as IP phones, IP cameras, wireless APs, and data collection terminals, without the need to consider the wiring of their power systems. In terms of versatility, as long as the current PoE power supply system complies with the IEEE 802.3 standard, it can solve the problem of adaptability between power supply and powered devices of different manufacturers.
With the advent of the IEEE802.3bt standard PoE switch, the power supply capability has been continuously enhanced, which can not only meet PoE equipment (including electric surveillance cameras, video phones, high-definition displays, and low-power intelligent building equipment such as controllers, sensors, and actuators), etc. And, it can meet the retail store business point (POS), video conference terminal point, public area communication terminal, building controller and sensor setting position, multi-channel wireless AP setting position, smart terminal device setting position, etc.