16 Pcs 8 Pair CCTV Coax BNC Video DC Power RCA Audio Balun Transceiver to CAT5 For CCTV Cameras System 8 Pair Of BNC Video Audio Power Balun Cat5 Transceiver For CCTV Camera High quality product Design for transmits audio , video and power over a single cable. Sends video up to 1000 feet via inexpensive cat.5 twisted pair cable . Route 12VDC/24VAC power via cat.5 cable . Light weight and compact ,simply install. Come in pair ,one for camera ,and the other one for DVR.