... 2:two levels of lighnting 3:1/4/8/16channels 4:300/600/1500/2500m 5:DC12V Our ... PAL, NTSC, SECAM, compatible with post, real time transmission if no delay, multi-channel are aluminum alloy shell, multi integrated circuit ... Specification:Item 300A1600A1,5001B,600A4,600A8,600A16Transmission signals:1 channel, 4 channel, 8 channel, 16 channelPower supplyPassive, DC12V, AC220VTransmission distance:300- ...