Sound Sensor Module

From the shop's description

This sound sensor can identify the presence of sound. The sensor sensitivity can be adjusted by potentiometer. The sound sensor module work like that: when the intensity of the sound can not reach set threshold, the OUT pin will output high level 5 volt ( open ). When the intensity of the sound reach more than the set threshold, the OUT pin will output low level (2.5 volt). supply voltage range: 3.3V - 5.3V Comparator IC: LM393 Mic type : capacitive Output: Analog ( normally open) - change from 5 volt to 2.5 volt when detect sound. Size: 39 x 17 x 10 mm