Bilge Alert™ High Water Alarm with Ultima Switch
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Bilge Alert™ High Water Alarm with Ultima Switch
A smarter approach to bilge water detection. The Bilge Alert™ High Water Alarm uses patented Mirus® field-effect technology to detect rising water without the sensor ever making direct contact with the bilge water. The fully sealed fluid detector is immune to corrosion, unaffected by oil or debris, and won’t suffer the false readings or mechanical failures that plague traditional float switches over time.
When water reaches the sensor, the system sends a signal after a 3-second delay to the panel-mounted Ultima Switch, triggering the alarm. The 3-second delay filters out wave action and sloshing, reducing false alarms in rough conditions.
Key Features
- Mirus® field-effect technology — sealed, non-contact fluid detection that never touches the water
- Detector is fully sealed — will not corrode and is unaffected by oil, fuel, or debris in the bilge
- 3-second signal delay filters out wave action and sloshing to minimize false alarms
- Panel-mounted Ultima Switch with three-position rocker: Test / Off / Armed
- Test position allows you to verify the alarm is functioning without flooding the bilge
- Compact panel-mount design suitable for helm panels and electrical cabinets
Specifications
- Detection Technology: Mirus® Field Effect (non-contact, sealed)
- Signal Delay: 3 seconds
- Switch Positions: Test / Off / Armed
- Mount Type: Panel-mounted
- Corrosion Resistance: Fully sealed — not affected by water, oil, or debris
Related Products
- Rule High Water Bilge Alarm System – 12V
- Rule High Water Bilge Alarm System – 24V
- Rule 3-Way Bilge Panel Switch – 12/24/32V
- Rule-Mate Automatic Bilge Pump – 800 GPH, 12V
- Rule-Mate Automatic Bilge Pump – 2000 GPH, 12V
Parts Desk Insights
The Bilge Alert™ is the premium choice when reliability and low maintenance matter most. Traditional float switch alarms can stick, corrode, or give false readings when the bilge is oily or debris-laden — common conditions on working boats and older vessels. The Mirus field-effect sensor eliminates those failure modes entirely because it never physically contacts the water. This makes it particularly well-suited for engine rooms, commercial vessels, and any application where a false alarm — or worse, a missed alarm — has real consequences. The built-in Test position is a practical feature: you can verify the alarm is armed and functional at any time without simulating a flooding event. If you’re looking for a float-switch-based alarm at a lower price point, see the Rule High Water Bilge Alarm as an alternative.
Shipping information
In-stock and OEM parts: ship same or next business day.
Locally warehoused items: ship within 3–4 business days.
Special-order items: timeline confirmed after order.
Returns & warranty
Returns & Satisfaction Guarantee
We stand firmly behind the quality of every product we sell. Your confidence matters to us — and we back it with a straightforward 30-Day Satisfaction Guarantee.
If you are not fully satisfied, you may request a return within 30 days of delivery. All returns must receive pre-approval prior to being sent back. Unauthorized returns will not be accepted.
To qualify for a return:
Item must be in new, unused condition
Product must be in its original packaging
All parts, components, hardware, manuals, and accessories must be included
Packaging must be undamaged and suitable for resale
Important:
Electronics are strictly inspected. No returns on open-box electronics. Exceptions may apply only with prior written approval. Any electronic unit that has been installed, powered, activated, or altered may not be eligible for return.
We are serious about product integrity — and equally serious about taking care of our customers. If there is ever a product issue, contact us immediately so we can make it right.
For return authorization, please contact our support team before shipping anything back.