Cisco - PoE injector

When a Cisco Aironet 1520 Series access point is installed on the roof of a building, power can be supplied over Ethernet using a power injector. The power injector converts AC power into DC power and sends it along with the Ethernet signal to the access point. Use the Cisco Aironet 1520 Series Power Injector, along with any standard outdoor rated Ethernet cable, to power the access point. Do not use any power injector other than the one
specified. You will need to specify the country-specific power cord with the power injector.