A product features:

1 can detect the surrounding environmentSound intensity,MakeNote: This sensor can only recognize the presence of sound (according to the principle of vibration) can not recognize the size of the sound or a specific frequency of sound

2 sensitivity adjustable (blue digital potentiometer adjustment)

3 working voltage 3.3V-5V

5 Output form Digital switch output (0 and 1High and low level)

6 with a fixed bolt hole, easy to install

7 small board PCB size: 3.2Cm * 1.7cm

Two module wiring instructions

1 VCC external 3.3V-5V voltage (can be directly connected with the 5v microcontroller and 3.3v single-chip)

2 GND External GND

3 OUT small board switch output interface (0 and 1)

Three instructions

1soundModule to the environmentSound intensityThe most sensitive, generally used to detect the surrounding environmentSound intensityThe

2 modules inThe ambient sound intensity is less thanWhen setting the threshold, OUT outputs high when the external environmentSound intensityWhen the threshold is exceeded, the module OUT outputs a low level;

3 small board digital output OUT can be directly connected with the microcontroller, through the microcontroller to detect high and low levels, thus to detect the environmentsound;

4 small board digital output OUT can directly drive our relay module, which can form aVoice controlswitch;