• Voltage: 5V
  • Have power indicator, output signal LED indicator.
  • TTL-level output, TTL output valid signal is low, drive capacity at 100MA, can directly drive relays, buzzer, a small fan, and so on.
  • Sensitivity adjustable via potentiometer
  • The output is high LED light up when no rain, and vice verse.
  • Raindrops board and the control panel is separate, convenient line leads.
  • A large area of raindrops board, more conducive to rain detected.
  • Board with positioning holes to facilitate installation
  • Control panel board size: 3 * 1.6 MM
  • The raindrop detection plate large area 5.4 * 4.0 MM


  • Connected to 5V power supply power lights,
    • When no water droplets, DO output is high and the switch indicator lights off,
    • dropping on a drop of water, DO output is low, the switch indicator lights on,
  • Brush off the the above water droplets, has returned to output to high state.
  • AO analog output can be connected to the MCU AD port to detect the size of the drops in the above rainfall.
  • DO TTL digital outputs can also be connected to the MCU detects whether there is rain.
  • 开关指示 = Switch Indicator
  • 电源指示 = Power Indicator

See the schematic on this page.

Additional information

Weight 0.015 kg

1 review for Rain Water Drop Sensor

  1. 5 out of 5

    quecg2 (verified owner)

    I tried it, it works really good (it works as a variable resistor).

    I don’t know if I’ll use it for some of my projects but it is a really funny sensor to play with.

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