Add Maretron MPower Digital Switching

This page explains how to connect and configure a Maretron MPower CLMD12 or CLMD16 DC Load Module with your BRNKL system.

Prerequisites

Before connecting your Maretron MPower module to BRNKL:

  • The device must be pre-configured on the vessel using Maretron’s N2KAnalyzer.

  • This ensures that digital switch controls and inputs are set up correctly for your boat.

  • Configuration is normally performed by the boat manufacturer or a trained marine electrician.

1. Connect to the NMEA 2000 Network

Connect the Maretron module to the same NMEA 2000 network as your BRNKL system.

2. Open the BRNKL Device Manager

  1. In BRNKL, navigate to Settings > NMEA 2000.

  2. You may see multiple paths labelled Littlefuse, Inc or Maretron:

    • One for each bank of buttons

    • One for each bank of digital switches.

The Maretron module sends updates every 15 seconds, so the digital switches may take up to 15 seconds to appear.

3. Identify the correct module

  • Expand each LittleFuse, Inc. / Maretron path.

  • Look at the list of PGNs under the path:

    • PGN 127501 only → This is a button panel. It cannot be controlled.

    • PGN 127501 + PGN 127751 → This is the digital switching module that can be configured.

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4. Configure digital switching module

  • Expand PGN 127501 under the correct module path.

  • Endpoints follow this format:

    • electrical.switches.bank.xx.yy.state

    • xx= the NMEA 2000 Device Instance.

    • yy = the Maretron switch number.

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  • Rename desired switches to something meaningful (e.g., “Bilge Pump”, “Flood Light”).

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  • Enable optional toggles that define how BRNKL views, alerts, records, and controls:

    • Monitor – Displays live switch status on your BRNKL dashboard.

    • Alert – Sends a push notification when the switch changes state while armed.

    • Critical Alert – Sends a push notification even if the system is disarmed.

    • Record – Logs each state change for history and diagnostics.

    • Control – Allows BRNKL to control the switch through the BRNKL Device Manager or the BRNKL App.

Sensor Type Options

When configuring a switch, assign the appropriate Sensor Type:

  • Bilge

    • For monitoring bilge pumps or float switches.

    • Helps detect leaks or excess water.

    • Pre-configured settings for optimized bilge alerts.

  • Shore Power

    • Monitors shore power connection status.

    • Ensures batteries are charging at dock.

    • Pre-configured settings for shore power loss alerts.

  • Security

    • For doors, hatches, or motion sensors connected via digital switch.

    • Triggers security alerts when the system is armed.

    • Pre-configured with security alert settings.

  • Custom Digital

    • General-purpose input for devices that don’t fit into predefined categories.

    • No pre-configured alerts — customize as needed.

Optional Features

  • Record on Alert – Triggers BRNKL to record video from selected cameras whenever this sensor triggers an alert.

  • Trigger on Alert – Activates linked devices when this sensor triggers (e.g., turn on lights, or sound siren).

5. Test Functionality

  • Monitor Test: Press the physical switch on the vessel and confirm the status updates in the BRNKL Device Manager or mobile app.

  • Control Test: In the Device Manager, go to Controls and toggle the switch on/off to confirm BRNKL can control it remotely.