VideoSecu 2 Pcs Passive CCTV Security Camera Video Baluns Network Transceiver CAT5 Connection 1EM Better EMI and RFI interference rejection than coaxial cable Transmits monochrome video signal up to 1,000 feet or color up to 800 feet Passive devices do not require power 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.