SHILLEHTEK KY-037 Sound Sensor Module for Arduino ESP32 Kits

The ShillehTek KY-037 Sound Sensor Module lets your Arduino or ESP32 detect sound levels and sound events using an onboard microphone and simple output pins. It is commonly used for clap switches, noise-triggered lights, basic audio-reactive projects, and simple sound monitoring. You typically get an analog output for reading relative sound intensity and a digital output that triggers when sound crosses a set threshold (adjustable via the onboard potentiometer), making it easy to prototype sound-triggered behavior without complex audio processing.