The smallest 2.4GHZ Wireless Transmitter And Receiver 2000m transmission distance

2.4GHz Wireless Transmitter And Receiver:
connect to any camera or any digital video recorder
connect to any digital video recorder to accept AV signal
The world's smallest 2.4GHz Wireless Transmitter And Receiver
Transmit and receipt video and audio signal by 2.4G frequency band
RCA video input port
*4 channels available to avoid interference
*Min 2000m transmission distance without block
*Suitable for any camera and any digital video recorder
* Transmission frequency range:
CH1-2414MHz
CH2-2432MHz
CH3-2450MHz
CH4-2468MHz
Size:43mm*28.5mm*16mm