BW&reg; FPV 1.2GHz 1500mW 8Channels Wireless Audio Video AV CCTV Transmitter Receiver Set Input Voltage: DC 12V ; Consumption Current: 400mA Working Frequency: 1.2G~1.3G Channel: 8Ch, AV synchronization Output Power: 1500mW Transmission distance (Open Space): 1000M-2000M