BW&reg; FPV 1.2GHz 1.2G 800mW 8CH Wireless Digital Video Audio AV Transmitter Receiver System Input Voltage: DC 12V ; Consumption Current: 280mA Working Frequency: 1.2G~1.3G Channel: 8Ch, AV synchronization Output Power: 800mW Transmission distance (Open Space): 800M-1500M