Attwood Automatic Float Switch - 12V & 24V

The Attwood Automatic Float Switch (12V & 24V model 4202-7) transforms manual bilge pump operation into hands-free automation—a critical upgrade for any serious boater who spends extended hours on the water. Whether you're running a fishing charter, cruising offshore, or leaving your vessel unattended at the dock, this float switch eliminates the risk of bilge water accumulation by activating your pump the moment water reaches a preset level. Anglers and boat owners know that unexpected leaks, heavy rain, or wave wash can quickly compromise vessel safety; the Attwood switch provides reliable, silent protection 24/7.

The switch operates at both 12-volt and 24-volt DC systems, with maximum amp draw rated at 12 amps on 12V circuits or 6 amps on 24V systems—making it compatible with most standard marine electrical setups without requiring additional relay wiring. Its compact, low-profile design mounts horizontally or at angles up to 24 degrees, adapting to tight engine compartments and bilge configurations found in everything from center consoles to cabin cruisers. The float mechanism responds immediately to rising water levels, sending power directly to your bilge pump in a single, automatic cycle that operates silently and requires no user intervention or regular maintenance.

This Attwood switch suits commercial operators, weekend warriors, and liveaboards alike—anyone who values peace of mind during rough seas or overnight stays. Installation is straightforward on any horizontal or angled bilge surface, making retrofitting to existing pump systems quick and cost-effective. If you've ever returned to your boat only to find the bilge running dry or your pump struggling, the Attwood 4202-7 is the proven, industry-standard solution that gives you automatic protection when you need it most.