... range video transmitter receiver 2:two levels of lighnting 3:1/4/8/16channels 4 ... confirmed4: Warranty: 2 years guarantee from purchasingDescription of CCTV Video Balun/ Twisted Pair wirless long ... distance: 300metres, 600metres, and 2500metres. support all of the video format, include PAL, NTSC, SECAM, compatible ... transmitter receiver(with power) two levels of lighnting video transmitter receiver