The power injector combines 56-VDC power (supplied by internal power supply) with the data signal, sending both to the access point. The power injector provides up to 80 W over all four wire pairs of shielded, outdoor rated Ethernet cable.
Ensure that the length of the Ethernet cable from the AP to the power injector is more than 10 ft (3 m), but less than 140 ft (42 m). The total length of the cable from the AP to the switch must not exceed 320 ft (100 m). The wire gauge of the cable must be 26 AWG.
The Ethernet cable from the switch to the power injector must be a shielded CAT5e or higher Ethernet cable. The Ethernet cable from the power injector to the access point must be a shielded outdoor-rated CAT5e or higher Ethernet cable with a 0.20 to 0.35 inch diameter.