This is a photoelectric water liquid level sensor that is operates using optical principles. The advantages of this photoelectric water liquid level sensor
are good sensitivity and no need for mechanical parts - meaning less calibration! The corrosion resistant probe is easily mounted and can handle high temperature and high pressure. The Arduino liquid sensor is equipped with an interface adapter for compatibility with the DFRobot "Gravity" interface.
To ease the difficulty of using this Arduino liquid sensor, a Gravity Interface is adapted to allow plug & play .
Note: Avoid placing the sensor near bright lights or in direct sunlight as these can cause interference.