1. A mounting screw hole 3mm
n2. The use of 5v DC power supply
n3. With analog output
n4. There are threshold level output flip
n5. The high sensitive microphone and high sensitivity.
n6. A power indicator light
n7. The comparator output is light
n8. For sound detection module has two outputs:
n1. AO, analog output, real-time output voltage signal of the microphone
n2. DO, when the sound intensity reaches a certain threshold, the output high and low signal
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