PoE (Power over Ethernet) provides direct current. PoE technology transmits data and direct current power simultaneously through Ethernet cables. It is suitable for devices such as IP phones, wireless APs, and network cameras.

PoE technology works by transmitting power through the existing Ethernet wiring system. This means that no changes are required to the existing network wiring. This technology can provide DC power to IP-based devices while transmitting data signals. This means that wiring and maintenance work can be simplified.
The application scenarios of PoE technology are very wide. These include but are not limited to IP phones, wireless APs, network cameras, portable device chargers, card readers, etc. With PoE power supply, these devices no longer need independent power sockets. They only need one network cable for power supply and data transmission.