Rule Hi-Water Bilge Alarm

The Rule Hi-Water Bilge Alarm is a dual-function monitoring system designed to protect your vessel from one of the most common causes of on-water emergencies: undetected bilge water accumulation. Whether you're running a fishing boat, cruiser, or recreational vessel, unexpected water intrusion can develop quickly in machinery spaces, engine compartments, or hull sections—often out of sight until catastrophic failure occurs. This compact alarm unit serves as an early-warning sentinel, alerting you audibly and visually to dangerous water levels before damage spreads.

Rule engineered this bilge alarm with a proven float-switch mechanism that activates when water rises to a preset level, triggering both an audible alarm and indicator light visible from the helm or cabin. The dual-alert design ensures you won't miss a warning even in noisy engine rooms or while operating topside. Its lightweight construction (0.7 lbs) simplifies mounting and doesn't stress hull systems or electrical infrastructure.

Anglers and cruising boaters benefit most from continuous, passive bilge monitoring—especially during extended offshore runs or overnight anchorages when equipment wear and vibration can loosen through-hull fittings. The Rule Hi-Water Bilge Alarm is ideal for retrofit installation on older vessels lacking modern monitoring systems and is compatible with 12V / 24V DC electrical systems.