10 PCS Sound Detection Sensor Module Microphone Module Voice Control Whistle Switch For Arduino(B...

1. It can detect the sound intensity of the surrounding environment. Note: This sensor can only identify the presence or absence of sound (according to the principle of vibration) and cannot identify the size of the sound or the sound of a specific frequency
2. Adjustable sensitivity
3. Working voltage: 3.3V-5V
4. Output form: digital switch output (0 and 1 high and low level)
5. Equipped with fixing bolt holes for easy installation
6. Small board PCB size: 3.2cm x 1.7cm
7. Module wiring instructions:
-VCC external 3.3V-5V voltage (can be directly connected with 5v single-chip microcomputer and 3.3v single-chip microcomputer)
-GND External GND
-OUT small board switch output interface (0 and 1)