1:long range video transmitter receiver 2:two levels of lighnting 3:1/4/8/16channels 4: ... purchasingDescription of CCTV Video Balun/ Twisted Pair wirless long range video transmitter receiver:Twisted-Pair Video Transmission is a twisted pair achievement of ... , transmission distance: 300metres, 600metres, and 2500metres. support all of the video format, include PAL, NTSC, SECAM, compatible with post, ...