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This MAX4466 Electret Microphone Amplifier with Adjustable Gain Module is best used for projects such as voice changes decibel(dB); audio recording/sampling, and audio-reactive projects that use FFT. On the back, we include a small trimmer pot to adjust the gain. You can set the gain from 25x to 125..

The Sound Impact Sensor detects sound from up to 3 meters away, lending noise-activation possibilities to your project. This sensor also includes an onboard potentiometer for easy adjustment of the range of detection for the sensor. This sensor is compatible with any microcontrollers.  Featu..