The Rule 500 GPH Auto Bilge Pump utilizes advanced solid-state water sensing technology to detect water presence accurately, activating at a 2-3/4" water level while ignoring oil contamination. Designed for reliability, this submersible pump features an ignition-protected motor, an anti-fouling impeller to reduce maintenance, a black flow preventer to avoid backflow, and a snap-off strainer for easy cleaning, ensuring efficient and safe bilge water removal in demanding marine environments.