Sound detector module

Sound detection sensor module for arduino detects whether sound has exceeded a threshold value. Sound is detected via microphone and fed into an LM393 op amp. The sound level set point is adjusted via an on board potentiometer. When the sound level exceeds the set point, an LED on the module is illuminated and the output is sent low.

Technical Specification

• Working voltage: DC 3.3-5V
• Dimensions: 45 x 17 x 9 mm
• Signal output indication
• Single channel signal output
• With the retaining bolt hole, convenient installation
• Outputs low level and the signal light when there is sound