Sends video up to 1,000 feet via inexpensive cat. 5 twisted pair cable * Lower cable cost: The cost of baluns plus Cat. 5 cable may less than traditional wire. Especially for high cost Plenum Coax cables * Better EMI and RFI interference rejection than coaxial cable * Come in pair, one for camera, and one for DVR * Transmits audio, video and power over a single cable