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Water Turbidity Sensor Module


The working principle of the turbidity sensor: When light passes through a certain amount of water, the amount of light penetration depends on the amount of dirt in the water. As the amount of dirt increases, the light that penetrates the water sample decreases, and the turbidity sensor measures the amount of light transmitted to calculate the turbidity of the wash water.

The turbidity sensor provides these turbidity measurements to a washing machine or dishwasher controller, with the washing machine and dishwasher controller determining the time of each wash cycle. These judgments are based on a comparison between the measured value of the purified water (measured at the beginning of the washing cycle) and the measured value of the washed water measured at the end of the washing.

By measuring the turbidity of the wash water, the washing machine can only wash the time required to wash the laundry which is not very dirty, thereby saving energy, so that the end-user saves energy.

  • Sensor default out analog value 0~4.5V
  • Small breakout to detect analog threshold value to digital output
  • On board two LEDs, red power status, green digital output status LED (not very bright)
  • Cable length 20CM
  • Demo code to read analog or digital value please see our git demo code.Default analog value output, switching jumper for digital output. Tuning onboard potentiometer to change the analog threshold.

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