Features PP Plastic: The double float bowl is made of PP plastic, resistant to aging, glazed surface, excellent workmanship and high actual durability Automatic pumping: automatic pumping, stop when full of water, use A1, A2 for automatic pumping, B1, B2 for automatic draining, stop when there is no water Ventilation hole shape: The shape of the ventilation hole can prevent water vapor from corroding the internal components of the switch in a humid environment to prolong the life of the switch Main body seals: The main body of the switch is sealed to completely prevent moisture and dust, and the center of gravity of the solid float is stable and accurate Application: Suitable for automatic water level control of self-supplied 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-powered water pumps, fountains, 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 Maximum power of the pump: 0.75 kW (1 HP) Package list: 2 x Floating Ball 1 x control box 1 * Bracket Package List 2 x Floating Ball 1 x Control Box 1 x Bracket