High & Low, water level controller, is recommended to switch on and off the pump by maintaining the water level in the tank in case of using the booster pump for filling the tank. Once the water goes below the low-level sensor of the controller will allow the pump to switch on automatically. Moreover, once the water level is on the high set level, the sensor will close off the pump automatically. It also has the equipment for manual operation through which a pump can be operated manually by pressing the toggle switch to the manual position.