Feature:1. PP Plastic: The double float shell is made of PP plastic, aging resistance, glazed surface, excellent workmanship, and strong actual durability2. Automatic Pumping: Automatic pumping, stop when the water is full, use A1, A2 for automatic pumping, B1, B2 for automatic drainage, stop when there is no water3. Ventilation Hole Shape: The ventilation hole shape can prevent water vapor from corroding the internal components of the switch in a humid environment to extend the life of the switch4. Main Body Seals: The main body of the switch is sealed, completely moisture and dust prevention, and the center of gravity of the solids float is stable and accurate5. Application: Suitable for automatic water level control of self provided water pumps, wells, pools and other water supply systems in factories and familiesSpecification:Item Type: Double Float Liquid Level SwitchMaterial: PP PlasticPurpose: Suitable for automatic water level control of self provided water pumps, wells, pools and other water supply systems in factories and familiesControl Range: Approx. 0.2-5m / 0.66-16.4ftWorking Temperature: 0~80Working Life: 50000hProtection Level: IP68CSPump Maximum Power Can Be Connected: 0.75KW (1HP).Package List:2 x Floating Ball1 x Control Box1 x Bracket