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ART. No. SM-102 Sound Switch

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0.10 LBS
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Product Description


 The module is only able to detect the presence of sound and not its loudness.

Sound level threshold is set by the on board sensitivity variable resistor . When

sound level is exceeded, it will flash an on board Led as well as providing a low

output to activate any external circuit.


Operating Voltage:  3.3V to 5V

Digital Output:  high or low (normally at high, when set sound level is exceeded output goes low)

Board size:  32 x 17mm



Vcc   =  5V battery positive terminal

GND = connect to battery negative terminal

Out  = output to external circuit


Price: $1.50

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