1SUITABLE FOR PUMP CONTROL: This liquid level float switch is suitable for controlling the operation of pumps, as well as for installation on submersible pumps for engine control and protection. 2HIGH SEALING PERFORMANCE: The 4m float switch adopts polypropylene sealing to ensure high sealing performance. The design of the float switch utilizes the principles of gravity and buoyancy, making it simple and reasonable in structure. 3AUTOMATIC WATER LEVEL ADJUSTMENT: The water level float switch automatically adjusts and is user friendly, easy to install, safe and reliable, promoting a greener and more environmentally friendly solution. 4VERSATILE APPLICATIONS: For motor power below 750W, the float switch can be directly used. For motors above 750W, it is recommended to use an AC contactor. The float switch water level controller is suitable for a variety of containers such as swimming pools, barrels, tanks, and more, widely used in households, factories, and mining enterprises for storing water, oil, acids, alkalis, and other substances. 5EASY INSTALLATION AND RELIABLE PERFORMANCE: This float switch for water tanks offers easy installation and reliable performance, ensuring efficient and effective control of water levels in various applications. 1 x Water Level Float Switch 1 x Float Ball