4pin Mini Voice Sound Detection Sensor KY038
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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.
