Voice Sound Sensor - KY-038

SKU:

39-00013304

CompanyOem

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Description
Specifications

KY-038 LM393 Sound Detection Sensor Module for Arduino detects whether the sound has exceeded a threshold value. The sound is detected via a microphone and fed into an LM393 op-amp. The sound level setpoint is adjusted via an onboard potentiometer. When the sound level exceeds the setpoint, an LED on the module is illuminated and the output is sent low.

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 3.3-5V
Signal output indication
The output is digital
Single-channel signal output
With the retaining bolt hole, convenient installation
Output low level and the signal light when there is sound
Dimensions: 37x15x13.7mm
Weight: 4g

Pinout:

AO: Analog output sensor
GND: Ground
VCC: Power supply
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.