Feature: Turn pump on when water lever reaches 2" Turn pump off when water level reaches 3/4" For use with pumps drawing up to 20Amps>Use with the recommended size fuse for the pump to which it is connected. Heavy duty and brand new For yachts, boats, fishermen. Connect it to a pump. CAUTION: Keep all wire connections above the highest water level. Wires should be sealed with a waterproof marine sealant to prevent wire corrosion. Do not use with 110V applications Designed for fresh water or sea water only. Model: SFBS-20-01; 20AMP 12-24-34V DC Max Amps 12volts 30A Max Amps 24 volts 15A Max Amps 32 volts 12A Wire length 1m Wire gauge size 18 N.W/N.W 0.16/0.2 Product dimensions: 5" x 1.9" x 2" approx.; Ignition protected; Mercury free; Solid ABS material for high strength and durability Long life, switching frequency up to 10 million times; Ultrasonic welding, forming a seal, reliable and secure, not leaking Note: Due to the difference between different monitors, the picture may not reflect the actual colorof the item. Thank you! Package includes: 1 Pc Float Switch