Area of UseThis product is used to control the pump operation and liquid level, and can also be installed on the submersible pump to control and protect the motor. Good SealingSealed with polypropylene that excellent balance is guaranteed. It is widely used in swimming pools, barrels, tanks, and other containers of water, oil, acid, and alkali in homes, factories, and mines. Scientific PrinciplesThe float switch is designed according to the principle of gravity and designed buoyancy, with a simple and reasonable structure. Easy to InstallIs automatic adjustment, easy to operate, safe, reliable, eco-friendly and eco-friendly. Usage: A motor of 750W or less can directly use the float switch; If the motor exceeds 750W, it is advisable to use an AC contactor. Size: 5 mill ... Note: Due to the light and screen setting difference, the item's color may be slightly different from the pictures. Please allow slight dimension difference due to different manual measurement.