VideoSecu 5 Pair of Audio Video Power Baluns Network Transceivers for CCTV Security Camera M50 Transmits audio, video and power over a single cable Sends video up to 1,200 feet via inexpensive cat. 5 twisted pair cable Built-in surge protection. 50 dB cross-talk and noise immunity Come in pair, one for camera, and one for DVR Lower cable cost: The cost of baluns plus Cat. 5 cable may less than traditional wire. Especially for high cost Plenum Coax cables