Electrical Power Transfer provides a means of transferring electrical power from a door frame to the edge of a swinging door. The units are completely concealed when the door is in the closed position, and are ideal for installations involving abuse or heavy traffic. UL listed as "miscellaneous door accessory". UL listed for use on firedoors. Ten 24 gauge wires, Up to 1 AMPS @24VDC, with a 16 AMPS Maximum Surge.