Sound Detection
Summary device description.

Features
- The module has 2 outputs: AO, analog output, real-time output microphone voltage signal; DO, when the sound intensity reaches a certain threshold, it outputs high and low level signals, [threshold-sensitivity can be adjusted by potentiometer]
- There are 3mm mounting screw holes, which are powered by a 5v DC power supply.
- There is an analog output with a threshold flip level output.
- There is a power indicator and the comparator output has an indicator.
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