This is a multipurpose sound sensor which can be used to sense sound and audio. The sensor provides a digital ouput when the measured sound increases beyond a set threhold. This threshold level can be adjusted using an onboard potentiometer. The sensor outputs a logic one(+5V) at the digital output when it detects sound and a logic zero(0V), when there is no sound detected. An onboard LED is used to indicate the output status. This digital output can be directely connected to an Arduino, Raspberry Pi, AVR, PIC, 8051 or any other microcontroller to read the sensor output.

The onboard potentiometer can be used to set the sound threshold. To set the potentiometer, use a screw driver and turn the potentiometer knob.

Features:

Input Voltage: 5V DC
Comes with an easy to use digital output
Main chip: LM393
Working voltage: DC 4 ~ 6V
Single digital signal output.
Effective signal output for low level
Default output is low and is high only when sound is detected
Can be used for sonic lamp, with photosensitive sensors act as sound and light alarm, also can be used in the occasion of voice control and sound detection.