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Non-Contact Liquid Level Sensor 5-12V NPN
These are very cool water level sensors. Simply stick them outside a non-metal container or tank and it will switch with a signal to a microcontroller. If you supply 5V from, let's say an Arduino Uno, it will output 5V to a digital pin so you can do your magick in your coding like starting a water pump. If you use two you can set a low and high water level to start a pump when the low water level is reached and stop the pump when the high water level is reached.

Non-Contact Liquid Level Sensor 5-12V NPN

SKU: NVM-SD2500220

  • Input voltage: (InVCC) DC 5 ~ 12 V

    Type: NPN
    Current consumption: 5mA

    Output voltage(High level): InVCC

    Output voltage (Low level): 0V

    Output current: 1 ~ 50mA

    Response time: 500mS

    Working temperature: 0 ~ 100 degree

    Induction thickness (Sensitivity) Range: 0 ~ 20mm

    Cable length : 500mm

    Communication: RS485

    Humidity: 5% to 100%

    Material: ABS

    Waterproof: IP67

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