... 400mw 1.2G Wireless transmitter and receiver Transmit power:400mW Effective Range 400~800metres Channel Number 8CHS 100mw 1.2g wireless AV transmitterTransmit Power ... :100~200 metersPackage:8CH receiver,transmitter,2 antennas,TX calbe,AV cable1.2G 100mW Wireless AV transmitter's data:Model Working VoltageDC ... ,1antenna,TX cableOperation Temperature-10C~+50C 400mw 1.2G Wireless transmitter and receiver