for sound detection
The module has 2 outputs:
1. AO, analog output, output the voltage signal of the microphone in real time
2. DO, when the sound intensity reaches a certain threshold, output high and low level signals [threshold-sensitivity can be adjusted by potentiometer]
Module Features:
1. There are 3mm mounting screw holes
2. Powered by 5V DC power supply
3. With analog output
4. Threshold flip level output
5. High-sensitivity microphone with high sensitivity.
6. There is a power indicator light
7. The output of the comparator has an indicator light
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