Click to enlargeJohnson Pump Bilge Alert High Water Alarm - 12V Sensor
Manufacturer: Johnson PumpPart #: 72303SKU: 81428
- 12V
Item #: 81428
Category: Monitoring System
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Description
Bilge Alert High Water Alarm - 12V Sensor The Johnson Bilge Alert High Water Alarm detects disruptions in a bilge pump from water or other fluids. The alarm is very small, easy to mount, and is held within a sealed case that resists all corrosion or potential damage from oil and debris.
The Johnson Bilge Pump Alert system utilizes a patented Mirus field effect detector cell that produces a micro-electrical field. When activated, the system triggers a 100db piezo alarm and LED light on the control panel.
To prevent false alarms, water must disrupt the sensor for 8 seconds before going off. In addition, a 3-way rocker switch allows users to test, arm, and turn off the alarm.
Specifications
| Brand | Johnson Pump |
|---|---|
| Part Number | 72303 |
| EverTide SKU | 81428 |
| UPC | 729321910996 |
| Voltage | 12 V |
Specifications are provided by the manufacturer. Confirm fitment for your application before ordering, or contact us and we'll help.
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Returns & warranty
Returns are accepted within 30 dayson items that are unused and in their original packaging. Some items may be subject to a manufacturer restocking fee. Special-order items may not be eligible — if you're unsure, ask us before ordering.
Johnson Pump productscarry the manufacturer's standard warranty. For a warranty claim or a return authorization, see our full returns policy or contact us.
Marine Plumbing & Ventilation — frequently asked
- How do I size a bilge pump?
- Bilge pumps are rated in gallons per hour (GPH), but actual output is lower once you account for hose length and vertical lift. Choose a pump rated well above your expected worst-case water intrusion, and consider a second, higher-capacity pump plus a float switch for automatic operation.
- Can I use regular garden hose for my boat’s water system?
- No. Marine plumbing uses purpose-built hose rated for the specific system — potable water, sanitation, and raw-water/bilge hoses differ in pressure rating, temperature resistance, and permeation. Using the wrong hose causes odors, leaks, or contamination.
- Why is ventilation important on a boat?
- Ventilation clears moisture that causes mildew and rot, and — critically on gasoline boats — clears fuel vapors from the engine compartment before starting. Blowers, cowl vents, and dorade boxes keep air moving through cabin and engine spaces for safety and comfort.
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