The Rule SuperSwitch is built for the toughest marine applications. As the world's largest selling marine float switch, it automatically activates your non-automatic bilge pump the moment water is detected — delivering reliable, trouble-free bilge protection without battery drain or exposed metal to corrode.Heavy-duty double-insulated blocked wiring and a wide, free-action float provide superior buoyancy and performance. The removable snap-on base makes fitting, cleaning, and servicing simple. Compatible with any brand of submersible bilge pump rated 12V, 24V, or 32V up to 20A — and suits all models of Rule DC non-automatic pumps. Non-mercury, environmentally responsible design Tested to over 1 million cycles Ignition protected, ultrasonically welded and sealed Heavy-duty double-insulated blocked wiring Wide, free-action float for superior buoyancy Removable snap-on base for easy install and servicing Compatible with 12V, 24V & 32V pumps up to 20A Suits all Rule DC non-automatic pump models 5-year Rule warranty Dimensions: 135mm (L) x 54mm (W) | Base footprint: 66 x 45mm