Ultima Auto Float Switch by Johnson Pump

The Johnson Pump / Mayfair Marine Ultima Bilge Pump Automatic Float Switch can handle pumps that use up to 20 amps at 12 or 24 volts. The digital technology utilizes the patented Mirus field effect detector which produces micro-electrical fields that detect disruptions caused by any fluid. The cells are totally sealed so they are never in contact with the water or fluid so corrosion and debris are not a problem.

The Ultima Automatic Float Switch activates at 2 inches fluid level and deactivates at 3/4th inch fluid level with an 8 second delay to prevent false starts.