2.4G 2000mW wireless av transmitter kit Transmitting range:4000m in open fields. 2.4G 2000mW transmitter circuit(BL-620T)Feature:Cabinet bulk,perfect shape,credibility,use ... 12V/3A power,and camera must use another power 12V/800mA. 4.Package Including:12 channel Receiver, transmitter,small antennas, AV cables, transmitter's power ...