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) 3-5 V working voltage 3.3 V 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 Module wiring instructions
VCC voltage is 3.3 V to 5 V converter (which can be directly connected to 5 V single-chip microcontroller and 3.3 V) GND external GND OUT of small plate switch output interface (0 and 1)