Water Sensor

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The Water Sensor module is part of the Grove system. It indicates whether the sensor is dry, damp or completely immersed in water by measuring conductivity. The sensor traces have a weak pull-up resistor of 1 MΩ. The resistor will pull the sensor trace value high until a drop of water shorts the sensor trace to the grounded trace. Believe it or not this circuit will work with the digital I/O pins of your Arduino or you can use it with the analog pins to detect the amount of water induced contact between the grounded and sensor traces.


  • Grove compatible interface
  • Low power consumption
  • 2.0cm x 2.0cm Grove module
  • High sensitivity

Applications Ideas

  • Rainfall detecting
  • Liquid leakage
  • Tank overflow detector


Working Voltage4.755.05.25V
Working Temperature1030
Working Humidity (without condensation)1090 %

Farees Ahmed

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