The KY-037 high sensitivity sound detection module is an analog/digital sensor that uses a condenser microphone to observe changes in environment noise. Generally used to detect sound above certain levels. It has a potentiometer to set the noise detection threshold.

The digital output provides a HIGH signal when sound above the threshold is detected. The analog output shows values representing the noise levels detected by the condenser microphone, the values are relative to the provided voltage and potentiometer position, making it difficult to reconstruct the audio from the obtained values.

This module is compatible with popular microcontroller platforms like Arduino, ESP32, ESP8266, and Raspberry Pi.

KY-037 Specifications

This module has a CMA-6542PF electret condenser microphone, an LM393 differential comparator to control the digital output, a 3296W potentiometer to adjust the detection threshold, 6 resistors, 2 LEDs and 4 male header pins. The module features analog and digital outputs.

Connection Diagram

Connect the modules analog output (A0) to pin A0 on the Arduino, and the digital output (D0) to pin 7.

Connect the modules power pin (+) and ground (G) to 5V and GND respectively.