Mayfair® Ultima Switch replaces your Mayfair® Ultima or newer-model Mayfair bilge pump switch.
Count on reliable, care-free bilge pumping, even when you're away! Switch utilizes patented Mirus field effect technology to sense water and fluids like oil and coolant.
The detector cells are never in contact with bilge water, so it won't corrode and it's not affected by oil or foreign debris. Totally sealed, solid-state electronics, with no exposed components and no mercury.Info: