Voltage: 5V Power indicator light, the output signal LED indicating lamp. TTL level output, TTL output signal for low level drive capacity of around 100MA, can directly drive the relay, a buzzer, a small fan, etc.. Sensitivity adjustment via potentiometer No rain when the LED light output is high, the output level, go up, LED bright. The board and the control board is separate, convenient wire. A large area of the board, more conducive to detect the rain. The board is equipped with a positioning hole to facilitate installation Control panel board size: 3*1.6 MM A large area of raindrop detection board 5.4*4.0 MM Connect cable: 200MM Connected to 5V power supply lights, induction board did not drop, DO output is high, the switch indication lamp is off, drop a drop of water, DO output is low, the switch indicator lights, Brush off the water droplets, and restored to the state, output high level Voltage: 5V Power indicator light, the output signal LED indicating lamp. TTL level output, TTL output signal for low level drive capacity of around 100MA, can directly drive the relay, a buzzer, a small fan, etc.. Sensitivity adjustment via potentiometer No rain when the LED light output is high, the output level, go up, LED bright. The board and the control board is separate, convenient wire. A large area of the board, more conducive to detect the rain. The board is equipped with a positioning hole to facilitate installation Control panel board size: 3*1.6 MM A large area of raindrop detection board 5.4*4.0 MM Connect cable: 200MM Connected to 5V power supply lights, induction board did not drop, DO output is high, the switch indication lamp is off, drop a drop of water, DO output is low, the switch indicator lights, Brush off the water droplets, and restored to the state, output high level