Features and usages:
The switch adopts electronics theory, controlled by water current. It is widely used in mini boosting pumps, solar water-heaters and industrial equipments. When water is on, it will start automatically. Otherwise, it will stop automatically and can adjust sensitively according to the differences pressures.

This switch has few troubles and long life. It can be used 20 thousand times without any stoppage. Different types are for different size motors.