It have integrated several filter to reduce noise of environment
It also have integrated AGC circuit to improve the audio effect
So the equipment is wonderful to use some audio system and monitor system
The box can be insert to the wall
The equipment can be fit to camera and transmit audio/video signal together
The listen distance over 100m²
(clockwise movement is to turn up the volume)
Connect method:
1, +12V: power ' +'
2, GND: power '– '
3, A out: audio system input port
Electronically parameter:
Power supply: DC 9V—12V
Dissipation circuit: 10mA
Frequency response: 200—10KHz
Out impedance: 600 Ω
Out level: 0—6Vpp
Size: 86mmX86mm