The following schematic shows the Simple Rain Detector Circuit Design. The electronic parts/components of the simple rain detector circuit include: 12V Buzzer (BZ1); C106B1 SCR; SPST Switch (S1); 1N4001 Silicon Diode (D1); 680 Ohm 1/4 W Resistor (R2); and 1K 1/4 W Resistor (R1)
