The Octopus water level sensor is the water level electrical component in the Octopus series. The basic design is from the Octopus electrical bricks, and the outlook setting, PCB mounting hole and connectors are identical. The water level sensor is an easy to use high performance sensor. The water level is detected by the exposed parallel wires and the amount of water. It can easily convert the water amount into analog signal and the output value can be detected by micro:bit, triggering the water level alarm.