This is sound switch / Voice switch, it can switch on/off by an effect sound example : hand clap or using to detect any sound effect from the target object. It has POT on board to adjust the sensitivity of Microphone.

Clap to turn on the switch , Clap again to turn off the switch.

Technical information:

    - Require Power Supply 12VDC
    - Current consumption 50mA ( max )
    - POT for sensitivity adjustment
    - 1 MIC, can extend longger from PCB board
    - Maximum load 5A , Normally open reley
    - PCB size : 2.92" x 1.49"

Download User Manual