The Ultima Switch uses patented Mirus™ field-effect detector cells to deliver highly reliable and maintenance-free fluid detection. These advanced, totally sealed cells create micro-electrical fields that sense the presence of water or other fluids without ever coming into contact with them, eliminating the risk of corrosion, contamination, or mechanical failure.
With no moving parts, no mercury, and no exposed sensors, the Ultima Switch offers a safe, environmentally friendly solution for automatic bilge pump activation. It activates at a 50mm fluid level and shuts off at 20mm, with a built-in 3-second delay to prevent false starts from splashes or turbulence. Designed to handle pumps rated up to 20A on both 12V and 24V systems, the Ultima Switch is a smart upgrade for dependable bilge control.