Feature:1. When the water level reaches 2in, the floating switch automatically opens. When the water level drops to 3/4in, the floating switch automatically disconnects.2. Heavy duty flow switch is designed for the toughest applications.3. For use with pumps drawing up to 20 Amps. Use with the recommended size fuse for the pump to which it is connected.4. The work is more stable and it can connect various yachts and boats.5. The switch utilizes a mercuryfree rolling ball mechanism to prevent certain switches from quickly turning on / off.Specification:Condition: Brand NewItem Type: Float SwitchMaterial: ABS Color: As Pictures ShownModel: NMFS11 2020AMP 12-24-34V DCMaximum Amps 12V: 20AMaximum Amps 24V: 10AMaximum Amps 32V: 8AWire Length: Approx. 1m / 3.3ftWire Gauge Size: 18Product Size: Approx. 5 x 1.9 x 2inIgnition protectedMercury free.Package List:1 x Float Switch1 x User ManualNote:1. Keep all wire connections above the highest water level. Wires should be sealed with a waterproof marine sealant to prevent wire corrosion.2. Do not use with applications3. Designed for fresh water or sea water only.