Blue Sea M2 Organic LED Digital Bilge Monitor
Blue Sea M2 Organic LED Digital Bilge Monitor
4-Pump Tracking, 80dB Audible Alarm & 500mA External Circuit Relay

DESCRIPTION
Advanced Marine Vessel Protection and Four-Pump Bilge Monitoring
Maintaining awareness of your vessel's hull integrity is critical for safe marine operations. The Blue Sea M2 Organic LED Digital Bilge Monitor delivers comprehensive tracking for up to four independent bilge pumps, providing captains and marine technicians with clear, actionable data. Standard indicator lights only tell you when a pump is active, failing to highlight slow leaks, cycling anomalies, or failing float switches until water levels become critical. This digital bilge monitor tracks essential parameters to help you identify potential mechanical or hull issues before they escalate into emergencies.
High-Visibility Auto-Dimming OLED Display
Marine environments present extreme lighting challenges, from blinding midday glare on an open flybridge to pitch-black night passages. Equipped with a bright, waterproof Organic LED (OLED) screen, this unit offers high contrast and wide viewing angles compared to standard LCD screens. The integrated auto-dimming function automatically adjusts screen brightness to match ambient light conditions, preserving your night vision at the helm while ensuring crisp readability in direct sunlight. Navigating menus and configuring alarm thresholds is straightforward, even in rough seas, thanks to four sealed, tactile push buttons on the durable marine-grade bezel.
Proactive Alarms and External Circuit Control
Relying solely on visual checks is rarely sufficient when underway or anchored overnight. This unit features customisable alarm thresholds paired with a prominent red visual indicator and a built-in 80dB audible buzzer, alerting you immediately to excessive pump activity or high-water events. Beyond passive monitoring, the M2 incorporates an isolated 500mA MOSFET External Circuit Relay (ECR). This relay allows the monitor to actively trigger external systems based on any measured value, enabling you to automatically activate secondary high-decibel sirens, strobe lights, or backup bilge systems when specific conditions are met.
- Multi-Pump Tracking: Monitors status and activity for up to four separate bilge pumps from a single centralized helm display.
- Auto-Dimming OLED Screen: Provides daylight readability and glare-free night viewing without manual adjustment.
- Integrated 80dB Alarm: Built-in audible alert and red LED warning indicator notify crew of abnormal bilge cycling or faults.
- Isolated 500mA MOSFET Relay: External Circuit Relay (ECR) triggers auxiliary alarms or external circuits based on user-defined thresholds.
- Marine-Grade Interface: Flush-mount bezel with four sealed push buttons designed for durability in harsh coastal dashboards.
Important Installation Considerations
Designed for seamless integration into modern marine switchboards and custom dashboards, the M2 series provides a clean, professional aesthetic. Please note that a bilge float switch is not included with this unit and must be sourced separately to suit your specific hull configuration and pump setup. Whether you are outfitting a commercial workboat, an offshore fishing vessel, or a coastal cruiser, this monitor reduces the risk of unnoticed water ingress and battery drain caused by stuck switches.
Upgrade Your Helm Monitoring
Protect your vessel with precise, automated bilge oversight. Integrate the Blue Sea M2 Digital Bilge Monitor into your marine electrical panel today for reliable peace of mind on the water.
SKU: BS-1842B
SPECIFICATIONS
| Specification | Details |
|---|---|
| Product type | Digital bilge monitor |
| Display | Bright Organic LED display with auto-dimming |
| Monitoring function | Measures essential electrical system parameters |
| Alarms | Adjustable alarms; 80dB alarm on all models |
| Relay output | Isolated MOSFET External Circuit Relay (ECR) |
| Relay current | 500mA |
| Relay function | Controls external circuits based on any value measured by the M2 |
| Bilge float switch | Not included |
| SKU: | BS-1842B |
| Model #: | BS-1842B |
| MPN: | BS-1842B |
| HS code: | 9031808085 |
| Country of origin: | MX |
| Package weight: | 0.24 kg |
| Package length: | 0.15 m |
| Package width: | 0.15 m |
| Package height: | 0.1 m |
WARRANTY
Blue Sea Warranty Policy
Blue Sea Systems products sold by us are supplied with a warranty against defects for the warranty period shown below, subject to the product type, application and the terms of this warranty policy.
The express warranty provided by us is limited to a maximum of 5 years from the original date of purchase, unless otherwise required under Australian Consumer Law.
Blue Sea Systems may offer longer manufacturer support on some products at their discretion
Warranty Lengths by Product Range
| Blue Sea Product Range | Warranty Length | Application / Notes |
|---|---|---|
| Most Blue Sea Systems Products | 5 years | Applies to most Blue Sea Systems products found to be defective in materials or manufacture. |
| P12 Battery Chargers | 5 years | Warranty period starts from the original date of purchase. |
| P12 Remote Displays | 5 years | Warranty period starts from the original date of purchase. |
| Digital Meters | 3 years | Warranty period starts from the original date of purchase. |
| Vessel System Monitors | 3 years | Warranty period starts from the original date of purchase. |
Warranty Assessment and Remedy
If a Blue Sea Systems product is found to be defective in materials or manufacture within the applicable warranty period, we will, at our discretion, arrange a repair, replacement, store credit or refund, depending on the nature of the fault and the requirements of Australian Consumer Law.
Products may need to be returned for assessment before a warranty claim can be approved. Where required, the product must be returned with dated proof of purchase and a clear description of the fault.
Labour costs for removing, replacing, reinstalling or diagnosing a product are not covered by this express warranty unless otherwise required under Australian Consumer Law.
Making a Warranty Claim
To make a warranty claim, please contact us with your dated proof of purchase, product details and a description of the fault.
The product may need to be returned for inspection before the claim can be assessed. If the product is confirmed to be faulty and covered by this warranty, we will advise the available remedy.
What This Warranty Does Not Cover
This warranty does not cover faults or damage caused by incorrect installation, incorrect application, misuse, abuse, neglect, unauthorised modification, accidental damage, normal wear and tear, environmental damage, or failure to use the product in accordance with the manufacturer's instructions.
- Incorrect installation or wiring
- Incorrect product selection or application
- Misuse, abuse or neglect
- Physical or accidental damage
- Water ingress or environmental damage outside the product's intended use
- Unauthorised modification or repair
- Normal wear and tear
- Labour costs for removal, replacement, reinstallation or diagnosis
- Freight, travel or call-out costs unless otherwise required by law
- Products not returned for assessment when reasonably required
Manufacturer Support
Blue Sea Systems may provide additional manufacturer support on some products beyond the warranty period listed above. Where available, we may assist customers in contacting the manufacturer, but any manufacturer support beyond the express warranty period is subject to the manufacturer's own terms and continued availability.
Australian Consumer Law
This warranty is in addition to other rights and remedies available at law. Our goods come with guarantees that cannot be excluded under the Australian Consumer Law. You are entitled to a replacement or refund for a major failure and compensation for any other reasonably foreseeable loss or damage. You are also entitled to have the goods repaired or replaced if the goods fail to be of acceptable quality and the failure does not amount to a major failure.

