Rule Hi-Water Boat Bilge Alarm System 33ALA - 12V Audible and Visual High Water Alarm, CFR 182.530 Compliant

The Rule Hi-Water Boat Bilge Alarm System (33ALA) gives boat owners constant monitoring of an unmanned bilge or other compartment, alerting the crew the moment water rises to an unsafe level. The system pairs a non-mercury float switch with an in-dash gauge that delivers both a visual indicator and an 85 decibel audible alarm, so a rising water condition is impossible to miss whether the operator is looking at the dash or not. This makes the 33ALA well suited for any unmanned space where early warning of flooding is critical to protecting the vessel.

The alarm system complies with CFR 182.530, which requires a visual and audible alarm in each unmanned space on commercial vessels at least 26 feet (7.9m) in length, making it a straightforward way to bring a vessel into compliance with that requirement. It is rated for use with pumps drawing up to 20 amps at 12 volts, and the float switch itself is mercury-free for safer, more reliable long-term operation. For boats with more than one compartment that needs monitoring, additional Rule float switches can be added to extend coverage without adding another gauge.

The in-dash gauge mounts to the helm or dash panel so the alarm is visible right where the operator is already looking, and the float switch installs in the monitored bilge or compartment. Together they form a simple, dedicated high-water warning system rather than a general bilge pump control switch.

Specifications

• Brand: Rule
• Manufacturer Part Number: 33ALA
• Product Type: High-Water Bilge Alarm System
• Voltage: 12 volts DC
• Maximum Amperage: 20 amps
• Audible Alarm Level: 85 decibels
• Alarm Type: Visual and audible
• Compliance: CFR 182.530
• Color: White
• Mounting Type: Wall mount (in-dash gauge)
• Sensor Technology: Non-mercury float switch
• Components Included: Float switch and in-dash gauge
• Weight: 1.47 pounds
• UPC: 042237095770

Frequently Asked Questions

What does the Rule Hi-Water Boat Bilge Alarm System (33ALA) do? It monitors an unmanned bilge or compartment and warns the crew when water reaches a high level, using a float switch paired with an in-dash gauge that gives both a visual and an 85 decibel audible alarm.

Is this alarm system compliant with CFR 182.530? Yes, the Rule 33ALA Hi-Water Bilge Alarm System complies with CFR 182.530, which requires a visual and audible alarm in each unmanned space on commercial vessels at least 26 feet (7.9m) in length.

What voltage does the 33ALA bilge alarm system run on? The Rule Hi-Water Bilge Alarm System operates on 12 volts DC.

What is the maximum amperage rating for this alarm system? The 33ALA is rated for a maximum of 20 amps, and is suitable for use with pumps drawing up to 20 amps at 12 volts.

How loud is the audible alarm on the Rule Hi-Water system? The audible alarm sounds at 85 decibels, paired with a visual indicator on the in-dash gauge so a high water condition is hard to miss.

Does the float switch in this kit contain mercury? No, the float switch included with the 33ALA Hi-Water Bilge Alarm System is mercury-free.

What is included with the Rule 33ALA Hi-Water Bilge Alarm System? The kit includes a non-mercury float switch and an in-dash gauge that provides the visual and audible alarm.

Can I monitor more than one compartment with a single 33ALA gauge? Additional compartments can be monitored by adding extra Rule float switches to the existing in-dash gauge, rather than installing a separate alarm system for each space.

Where is the gauge for the 33ALA alarm system mounted? The in-dash gauge is a wall mount unit designed to be installed at the helm or dash panel where the operator will see and hear the alarm.

What color is the Rule Hi-Water Bilge Alarm System gauge? The 33ALA in-dash gauge is white.

Is the 33ALA alarm system meant to control a bilge pump directly? No, this system is a dedicated high-water warning system that signals rising water via its gauge; it is rated for use alongside pumps drawing up to 20 amps at 12 volts rather than functioning as the pump's on/off switch.