Characteristics:
1. You can detect the intensity of ambient noise
(Using Note: This sensor can only detect the presence or absence of sound (based on vibration principle) not detect the size of the sound or specific sound frequencies).
2. Sensitivity adjustable (turn the blue digital potentiometer to set it).
3. Operating voltage 3.3V-5V
5. Output the form of digital switching output (0 and 1 high-low)
6. A fixed screw hole for easy installation
7. Small circuit board size: 32mm x 17mm

Module connection instructions:
1.VCC external 3.3V-5V voltage (which can be directly connected with 5V MCU and 3.3V MCU)
2.GND external GND
3.OUT small plates switch output interfaces (0 and 1)

Three instructions:

1. The sound module sound intensity most sensitive to the environment, is generally used to detect the intensity of ambient sound.

2. Module does not reach the set threshold environmental sound intensity, OUT output high, when the external environmental sound intensity exceeds a set threshold, the module OUT becomes low.

3. Small board digital output OUT can be directly connected to the microcontroller through the microcontroller to detect high and low, thereby detecting sound environment.

Package include:
3 x High Sensitivity Sound Microphone Sensor Detection Module