Feature: 1. PP Plastic: The double float shell is made of PP plastic, aging resistance, glazed surface, excellent workmanship, and strong actual durability 2. 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 water 3. 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 switch 4. 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 accurate 5. Application: Suitable for automatic water level control of self provided water pumps, wells, pools and other water supply systems in factories and families Specification: Item Type: Double Float Liquid Level Switch Material: PP Plastic Purpose: Suitable for automatic water level control of self provided water pumps, wells, pools and other water supply systems in factories and families Rated Current, Voltage: 15A 250V (380V) Control Range: Approx. 0.2-5m / 0.66-16.4ft Working Temperature: 0℃~80℃ Working Life: ≥50000h Protection Level: IP68CS Pump Maximum Power Can Be Connected: 0.75KW (1HP). Package List: 2 x Floating Ball1 x Control Box1 x Bracket