CAT5 TO BNC Passive Video and Power Balun Transceiver (5 Pairs) 5 Cameras, CAT5 TO BNC Passive Video and Power Balun Transceiver Great for short distance connection -Easier for CCTV camera installation, save time and save money 2.1 x 5.5mm CCTV Camera DC Power Plug Connector. Cat5 to BNC Connector Model: DSC-Cat5-Pack