VideoSecu One Pair of Passive CCTV Video Balun Camera Network Transceiver Cat5 Connection 1EM Passive devices - do not require power Transmitted distance of up to 1000ft Better EMI and RFI interference rejection than coaxial cable BNC Male to terminal block, fast installation Lower cable cost: The cost of baluns plus Cat 5 cable may less than traditional wire. Especially for high cost Plenum Coax cables