Revo 100' BNC Coaxial Cable Combined with 2.1mm Power and RS-485 Data Cables Supplies Power and Video Extend existing installations by up to 100ft. Shielded cable protects against EMI/RFI interference US rated cable supplies secure power from the camera to the DVR Control camera functions form the DVR by connecting the RS-485 data connector Heavy duty cable, featuring solid clasping coax connectors