This kit is a rain detector circuit, working on the water falling onto the conductive strips on the PCB, which will set off an oscillator of the transistors is to turn ON the speaker and LED. After you wiped out the water on the conductive strip’s surface, the Speaker and LED are turned OFF.

Technical Specifications

- Power Supply : 9VDC

- Current Consumption: 28mA.

- PCB dimensions : 2 x 1.5 in.

 

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