... purchasingDescription of CCTV Video Balun/ Twisted Pair wirless long range video transmitter receiver:Twisted-Pair Video Transmission is ... , SECAM, compatible with post, real time transmission if no delay, multi-channel are aluminum alloy shell, multi integrated ... lightning-proof and anti-jamming.Specification:Item 300A1600A1,5001B,600A4,600A8,600A16Transmission signals:1 channel, 4 channel, 8 channel, ...