High-Quality Balun allows you to connect any camera or DVR over CAT5 Ethernet cable.High-Quality Balun allows you to connect any camera or DVR over CAT5 Ethernet cable. Transmitter and receiver of CCTV video for use with CAT5 Cable Perfect for long distance cables up to 600 Meters 10-20% wire cost saved Outstanding interference rejection and transient protection Male BNC allows connection directly to the camera or DVR