A product features: 1 It can detect the sound intensity of the surrounding environment. Note: This sensor can only recognize the presence or absence of sound (according to the vibration principle). It cannot recognize the size of the sound or the sound of a specific frequency. 2 Sensitivity adjustable (blue digital potentiometer adjustment in the figure) 3 working voltage 3.3V-5V 5 Output form Digital switching output (0 and 1 high and low level) 6 Fixed bolt holes for easy installation 7 small board PCB size: 3.2cm * 1.7cm Two module wiring instructions 1 VCC external 3.3V-5V voltage (can be directly connected to 5v microcontroller and 3.3v microcontroller) 2 GND external GND 3 OUT small plate switch output interface (0 and 1) Three instructions for use 1 The sound module is most sensitive to the ambient sound intensity and is generally used to detect the sound intensity of the surrounding environment. 2 When the ambient sound intensity reaches the set threshold, OUT outputs a high level. When the ambient sound intensity exceeds the set threshold, the module OUT outputs a low level; 3 small-plate digital output OUT can be directly connected with the single-chip microcomputer, and the high-low level is detected by the single-chip microcomputer, thereby detecting the sound of the environment; 4 small board digital output OUT can directly drive our relay module, which can form a voice control switch.

Product Features

• It can detect the sound intensity of the surrounding environment. This sensor can only recognize the presence or absence of sound (according to the vibration principle) and cannot recognize the sound color size or the sound of a specific frequency.
• Sensitively adjustable () (blue digital potentiometer adjustment in the figure) Working voltage 3.3V-5V Output form digital switch output (0 and 1 high and low levels)
• The module is most sensitive to ambient sound intensity and is typically used to detect the intensity of the surrounding environment. When the ambient sound intensity reaches the set threshold, OUT outputs a high level. When the ambient sound intensity exceeds the set threshold, the module OUT outputs a low level.Fixed bolt holes for easy installation.7 small board PCB size: 3.2cm * 1.7cm
• The small-plate digital output OUT can be directly connected to the single-chip microcomputer, and the high-low level is detected by the single-chip microcomputer, thereby detecting the sound of the environment.
• small board digital output OUT can directly drive our relay module, which can form a voice control switch.