Johnson Pump Ultima Switch Auto Bilge Control

The Johnson Pump Ultima Switch uses digital technology and patented Mirus field effect detector cells, producing micro-electrical fields that detect disruptions caused by water and fluids without a mechanical float that can jam or foul.

The detector cells are totally sealed and never in contact with the water, so they won't corrode and aren't affected by oil or foreign debris the way a standard float switch mechanism can be.

It activates at a 50mm (2-inch) fluid level and deactivates at 20mm (3/4-inch), with a 3-second delay that prevents false starts from a bit of splashing bilge water. The Ultima switch is rated to handle all Johnson Pump submersible pumps. Check out the rest of our bilge pump switches and accessories.

• Mirus field effect detection, no mechanical float
• Sealed cells resist corrosion, oil, and debris
• 3-second delay prevents false starts
• Rated for all Johnson Pump submersible pumps