OdiySurveil(TM) 4 Channel Video (BNC) to UTP (RJ45) Video Balun OdiySurveil(TM) Brand product with the best quality and more efficient signal transmission,do not compare with those junk materials.The UPT Video Balun supports 4 video channel ( BNC ); One UTP Cable to carry 4 Video Signal or 4x UTP to carry 4 Video Signal with Camera Power; Adopt different signal transmission with excellent anti-jamming ability; BNC connector with high quality material(copper core), do not compare with common material (aluminum core_); aluminum Passive Device ( no power required ); Size of the Video Balun: 17.4cm long.Approx.