HL HullSentry
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HullSentry · DC leakage monitoring for metal-hull boats

Catch DC hull leaks before they become corrosion problems.

Monitor up to 4 battery banks from 12 to 48 V, get historic trends and automatic alerts, and use continuous debug mode to help find the circuit causing the problem.

Join the waitlist See how it works
Front view of the HullSentry facia: leak-location lights for banks A to D, insulation status lights, and an LCD showing a live reading for terminal A+.

How it works

Scans up to 4 battery banks for DC hull leaks.

HullSentry checks the positive and negative side of each battery bank against the hull reference, logs numerical readings, and keeps simple panel status visible through the LCD and leakage level LEDs.

Peace of mind, without remembering to use the tester.

Automatic periodic scanning

Install the device and forget about it.

In monitoring mode, the device wakes every 10 minutes, scans all battery banks for leaks, stores the readings, updates status LEDs, and if necessary raises an alert by email, sounds a buzzer, or activates an external relay if configured.

Actual trends, no more wondering when it started.

History instead of one-off checks

Traditional indicators show the present condition. Logged trends help owners see whether a conductor is stable, slowly changing, or moving during solar panel operation, shore-power use, or heavy rain.

Actual Ohm values and sound feedback while you work.

Continuous troubleshooting mode

Select one battery terminal and watch the live value change as you work. Fixing one leak in presence of another has a noticeable effect, contrary to pure LED-based monitors.

Higher and lower beeps keep you aware of changes while you are working deep in the hull, without calling someone back at the panel to read values to you.

Capabilities

Key specifications.

  • Power input: 12 V or 24 V DC, reverse-polarity protected.
  • Battery monitoring: up to 4 nominal 12–48 V battery banks, positive and negative, for 8 monitored wires.
  • Automated scans: all monitored battery banks are scanned automatically every 10 minutes.
  • Alerts: sound alerts with a mute function, email alerts if Wi-Fi is set up, and external relay output.
  • Controls: each function has a dedicated hardware button. No fumbling through LCD menus.
  • Status LEDs: visual alerts.
  • Wi-Fi: connect to the onboard Wi-Fi to send email alerts and access the historical data dashboard.
  • Web portal: visualize your data or download it as a .csv text file.
Back view product mockup of the HullSentry panel showing the connector side.

Join the waitlist

Get product updates and launch news.

Join the waitlist for updates, installation notes, early availability announcements, and preferential launch pricing.

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Submits through Brevo.

Important note

HullSentry is a monitoring tool and diagnostic aid for aluminium and steel boats. It supports troubleshooting, but it is not a replacement for a qualified marine electrician.