Features 1. Use 5.8GHz ISM frequency band, support 8 groups of 5.8GHz channel selection 2. The unimpeded transmission distance is up to 300 meters. Support through wall transmission 3. The digital screen displays the channels, and the channel selection is convenient and intuitive 4. Patented wireless anti-interference technology, effectively blocking wireless signal interference such as walkie-talkies and wireless routers 5. Support PALNTSC audio and video transmission 6. The transmitter supports 1 RCA audio and video signal input, and the receiver supports 1 RCA audio and video signal output 7. When the same channel, the transmitter and receiver can be used one to one or one transmitter to multiple receivers at the same time 8. Full hardware design, no need to install software, no settings, simple installation, plug and play Parameters 1. Transmission frequency: 5.8GHz 2. Sensitivity: -90dBm 3. Transmitting power: 50mW 4. Channel switching: 8 groups 5. Transmission distance: 300 meters 6. Input and output ports: RCA 7.1 video inputoutput: 1Vp-p (PALNTSC) 8.1 audio inputoutput: 1Vp-p (Stereo) 9. Power input: 5V, 1000mA 10. Shell material: aluminum alloy 11. Size: 10 x 10 x 2.5cm Packing List Transmitter x 1 Receiver x 1 Instruction manual x 1 Power adapter x 2 Audio and video cable x 2