The water level sensor measures the water level through a row of parallel wires, compares it with the predetermined water level set during the programming process, and obtains the deviation. Try making an automatic water injector switch for your bathtub!
Specifications
Connections: RJ11 4P4C
Power: 3.3V
Connections type: Analog output
You can find the introduction of this product following this link
https://wiki.elecfreaks.com/en/microbit/sensor/planet-x-sensors/Plant_X_EF05023
