Function: This float switch for water pump is applicable to the operation of the control pump, at the liquid level and can also be installed on the submersible pump to control and protect the engine. High Sealability: 5m float switch is sealed with polypropylene that guarantees high sealability. The float switch is designed using the principle of gravity and buoyancy, with simple and reasonable structure. Automatically Adjustable: water level float switch is automatically adjustable, easy to use, easy to install, safe, reliable, greener and environmentally friendly. Widely used: water level controller for water tank is widely used in swimming pools, barrels, tanks and other containers of water, oil, acid and alkali in households, factories and mines. Warm tips: Motor of 750W or less can use the float switch directly, if the motor is above 750W, it is advisable to use an AC contactor. Float Switch Water Level Controller