Specification:

Adopt LM393 main chip, Electric condenser microphone

Features Single channel signal output

Great module for sound alarm system

Working voltage: DC 4-6V

Interface definition:

AO: analogue output sensor;  GND : ground

VCC: Power supply input range: 3V-24V.

DO: Digital Output (comparator output)

Two red LED indications: POWER and SENSOR. POWER: Power is off. SENSOR: When the microphone senses sound reaches a certain value, this LED light.     

Package Contains:

1Nos Sound Microphone Voice Sensor Module