The DoorBird A1091 PoE Injector is a compact and robust Gigabit PoE injector, compatible with the PoE IEEE 802.3af standard. Its high-quality metal enclosure has been designed for mounting on walls, ceilings or in control cabinets. The PoE Injector can be used wherever PoE-compatible network devices are supplied with power via network cable. The PoE injector is supported by all PoE-compatible DoorBird network devices, such as the DoorBird IP video door stations, the DoorBird door chime and the DoorBird 2 wired Ethernet PoE converter.