KY-037 High Sensitivity Sound Detection Sensor

Description

About this item:

The KY-037 is a sound detection module designed for identifying sound intensity or sudden noises such as claps, knocks, or voice input. It is widely used in DIY electronics, robotics, and automation projects that require audio-based triggers.

Specifications & Features:

• Power Supply Voltage: 3.3V – 5V

• Microphone: Electret microphone

• Outputs:

  • AO (Analog Output): Continuous voltage proportional to sound level

  • DO (Digital Output): HIGH/LOW signal depending on whether sound exceeds a set threshold

• Sensitivity Adjustment: Onboard potentiometer for threshold tuning

Indicator LEDs:

• Power LED: Shows module is powered

• Output LED: Lights up when the set sound threshold is exceeded

Applications:

• Sound-activated switches

• Clap/knock detection

• Voice-based control triggers

• Robotics and interactive projects