PR-TFT 7" 9" 7" 9” SERIES MONITOR TFT Digital Monitor Features Power: no power required, simplified project wiring. Transmission effect: plug&play,real-time transmit CCTV video signal, video is clear and stable. Transmission distance: working with passive transceiver is 300m; working with active transceiver is 600m. Properties: 4 channel transmit or receive. Safety : anti-interference, super lighting protection, anti-static. Appearance design: MIT standard outer shell design, sophisticated technology ,high hardness steel rust, stable and durable. Installation: Thumb screws on the rack, unified management.