... 3.RJ 45 Joint, easy to connect CCTV Video Balun feature:PAIR of Baluns for CCD CCTV transmission ... up to 400Mlexible cable between BNC and Balun body that fits any DVR card compact backpanel.- ... Using UTP cable ( CAT 5, RJ45) to transmit video,l instead of co-axial.- Longer transmission distance ut ... much less than co-axial cable.- Support all video device, such as camera, monitor, DVR card ...