Icstation MAX9814 Electret MIC Microphone Amplifier Module Board AGC for Arduino

Description

This MAX9814 microphone amplifier module support DC 3V to 12V wide voltage input with auto gain control function perfect for Hearing aids, conference microphone, megaphone Specifications: Working Voltage:DC3-12V Module Size:50X25mm Package Included: 1X MAX9814 Microphone Amplifier ModuleNote:Plug the jumper cap on the AGC pin headers to close the AGC function Instructions: 1.A/R: connect A/R and GND, Startup/Release Ratio=1:500; Not plug the jumper cap on the pin headers, Startup/Release Ratio=1:2000; connect A/R and GND, Startup/Release Ratio=1:4000 2. GAIN: connect GAIN and VDD, the GAIN=40dB;connect GAIN and GND, the GAIN=50dB;not plug the jumper cap on the GAIN port pin headers, the gain is 60dB