HR0004 4pin Mini Voice Sound Detection Sensor KY038

Description:

 

Brand: KEYES

Model: KY-038

Adopt LM393 main chip

Electric condenser microphone

Features Single channel signal output

Low level output signal used for sound control light

Great module for sound alarm system

Working voltage: DC 4-6V

 

Interface definition:

 

AO: analog output sensor

GND: ground

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

DO: Digital Output (comparator output)

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

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