KY-038 Datasheet PDF – Microphone Sound Sensor Module

Part Number: KY-038, KY038

Function: Microphone Sound Sensor

Package: Module type

Manufacturer: ETC


1 page
KY-038 image


This is Microphone Sound Sensor Module.


Technical data / Short description :

1. Digital Out : You can use a potentiometer to configure an extreme value for the sonic. IF the value exceeds the extreme value it will send a signal via digital out.

2. Analog Out : Direct microphone signal as voltage value

Functionality of the sensor :

The sensor has 3 main components on its circuit board. First, the sensor unit at the front of the module which measures the area physically and sends an analog signal to the second unit, the amplifier. The amplifier amplifies the signal, according to the resistant value of the potentiometer, and sends the signal to the analog output of the module.

The third component is a comparator which switches the digital out and the LED if the signal falls under a specific value. You can control the sensitivity by adjusting the potentiometer.


KY-038 Datasheet