There is a mounting screw hole 3mm.
Use 5v DC power supply
There are threshold level output flip.
Real-time output of the microphone voltage signal / DO. when the sound intensity reaches a threshold
The output high and low signal threshold - Sensitivity potentiometer adjustmen. Application:Microphone sound detection

Technical Details

Product Details

Package Dimensions
Width : 3.4 inch
Height : 0.7 inch
Length : 3.6 inch

Shipping Weight: 0.16 ounce (View shipping rates and policies)

ASIN : B00XT0PH10