Can detect the intensity of the sound environment, use note: the sound sensor can identify the presence of (according to the principle of vibration) or a particular frequency of sound does not recognize the volume of the sound

Sensitivity adjustable digital potentiometer to adjust (blue)

3.3 V to 5 V working voltage

Output form digital switch output (1 s and 0 s + v)

Has a fixed bolt hole, convenient installation

Small board PCB size: 3.2 cm * 1.7 cm