Analog Sound Sensor Microphone Module

GST

The KY-037 Sound Sensor Module is a compact sound detection module that uses an onboard microphone to detect environmental noise levels. It provides analog and digital signals and can easily interface with development boards like Arduino Uno R3, Arduino Nano, and ESP32 Development Board.

The Analog Sound Sensor Microphone Module detects sound using a high-sensitivity electret condenser microphone. The module converts sound vibrations into electrical signals and outputs them to a microcontroller.

It includes an LM393 comparator and an adjustable potentiometer that allows you to set the sensitivity level for sound detection. The sensor can provide an analog output for measuring sound intensity and a digital output that triggers when sound exceeds a threshold.

This module is widely used in clap switches, sound-activated lighting systems, noise monitoring devices, security alarms, and smart automation projects.

Key Features

High-sensitivity electret microphone
Adjustable sound detection sensitivity
Analog and digital signal output
Onboard LM393 comparator for fast response
Power and signal indicator LEDs
Compatible with Arduino, ESP32, ESP8266, and other microcontrollers

Technical Specifications

Parameter	Value
Operating Voltage	3.3V – 5V
Output Type	Analog (AO) and Digital (DO)
Comparator IC	LM393
Microphone Type	Electret Condenser
Microphone Sensitivity	−42 ±3 dB
Current Consumption	~0.5 mA