PoE (= Power over Ethernet)

PoE ( Power over Ethernet) supplies network-compatible devices with power via the eight-wire Ethernet cable.
The biggest advantage of a PoE solution is that a power cable can be saved. This means that Ethernet-connected devices can also be installed in hard-to-reach or cramped applications.
With PoE-capable devices, a distinction is made between PSE devices (Power Sourcing Equipment) and PD devices (Powered Device). PSE devices are power supply units that transmit electricity – these include network switches and PoE injectors. PD devices in turn use the electricity as a consumer.
PoE is optimized for network devices that require max. 100 W (IEEE 802.3bt) power requirement. PoE is used in various areas. Well-known applications include VoIP, security cameras, access control systems, medical technology, building automation and WLAN access points.