MAX9814 Electret Microphone Amplifier Board Module with AGC Function DC 3V-12V

Description:
With AGC function,for hearing aids,conference microphone,loudspeaker and other devices.The output can directly drive an ordinary 32 European headphones(if you need more output,it is necessary at the output plus a preamp or amplifier)(suitable for single 18650 battery or battery-powered mobile phone use)
Supply voltage:3V-12V(3V-4.2V connect VCC,4.3V-12V connect 2pin socket)
AGC switch:Plug in supporting the shorting cap AGC function OFF,no AGC insert shorting cap open.