Williams AV POE KT2 IR T2 Infrared Transmitter Wiring KitUsing Williams Sounds passive POE injector kits(POE KT1andPOE KT2) allows the installer of an IR T2 to provide POE power and one of the following three options: 1 channel of balanced line level audio, 1 or 2 channels of unbalanced line level audio, RS 232 control and monitoring signal CAT5 cable contains four twisted pairs of wires, two of which are used for POE, and the remaining wires can be used for the additional features. Features (1) WCA 131 (1)