KY-038 sound detection module has two outputs, AO analogue output which gives real-time output voltage signal of the microphone and DO output when the sound intensity reaches a certain threshold, the output high and low signal.
The threshold-sensitivity can be adjusted via potentiometer on the sensor.
- Electric condenser microphone
- Voltage : 3.3v to 5v
- Comparitor : LM393
- Pin pith : 2.54mm