The Electret Microphone Amplifier Module is a compact audio sensing module designed to capture and amplify sound signals for embedded systems and microcontroller applications. It features an onboard electret microphone and adjustable gain amplifier that allows gain control from 25x to 125x using a trimmer potentiometer. The module provides a rail-to-rail analog output suitable for direct connection to ADC inputs on microcontrollers. Operating from a wide 2.4–5 V supply range, it ensures stable performance for audio detection, sound analysis, and audio-reactive projects. Ideal for Arduino, ESP, and other embedded audio sensing applications.
