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Alarms

Built-in battery monitoring & alarm system

Hear about it straight away on your phone by push and SMS — while you sleep, are ashore or away from the boat.

Alarm

and word when it matters

If the voltage falls below the limit you set yourself, you get a text message or a notification on your phone — also when you are not on the boat. The same if shore power drops out while the boat lies alone.

That is exactly what matters in winter: a house battery slowly emptying in an empty marina can quickly become an expensive affair.

  • You set the limit yourself — one per battery bank
  • Text message and notification, also when the boat lies alone
  • The same message if shore power drops out while the boat lies alone
The voltage falls, the limit is broken, and AYLO sends the message on its way — with nobody on board.
The message

Alarms in harbour, under way and at anchor — entirely automatic

AYLO turns the alarm notifications on and off by itself. You do not have to do anything. These are features that simply work. You set the alarm limit per battery bank once, and AYLO does the rest.

Text message from AYLO

Low battery voltage: House battery: 11.8 V (below 12.0 V)

Triggered: 14 Oct 2026 03:41

When the boat has the status 'In harbour', 'Sailing' or 'At anchor', the battery alarm switches on automatically and sends you a text message if the voltage falls below the limit.

Behind the alarm

AYLO measures all the time — also when there is nothing to report

For an alarm to be worth trusting, there have to be measurements behind it. AYLO listens in on the boat's own network around the clock and keeps what the batteries report — each bank on its own.

That gives up to a year of history, hour by hour: you can see the single night at anchor, and you can see the battery that has slowly got worse across a season.

  • Voltage — lowest, highest and average for every hour
  • Charge and consumption, and how long it charged
  • A verdict on the battery's condition, with the reasoning written out
The AYLO app's battery page with voltage for each bank, a health verdict and a graph of charge and discharge across three months.
The battery page in the app: the condition now, the wear measured over time, and what went in and out.

The alarm reads the voltage from a battery shunt on the NMEA 2000 network, for example a Victron SmartShunt.

Get started

Ready to sail in 3 easy steps

No technical knowledge required. Order online, install it on board and set sail.

  1. Order online

    Buy your AYLO here on the site. You receive the package with everything you need.

  2. Install on board

    Connect the unit to power and to your boat's instruments. Follow the simple setup guide in the app.

  3. Set sail

    Open the app on your tablet and head out. AYLO is ready from your very first trip.

Save 20% AYLO Core Unit

535EUR 669 EUR

One-time payment — incl. VAT

  • AYLO hardware unit
  • Mounting kit and instructions
  • Works with the tablet or phone you already own
  • Setup guide in the app

Need a tablet? Add a Samsung Galaxy A11 with the app pre-installed for 175 EUR in the basket.

6 months free Subscription

13EUR/mo.

  • Access to every feature
  • Continuous updates & new features
  • Marina Guide — 4,500+ harbours
  • AIS, logbook and sensor monitoring
  • Support & help

New customers get 6 extra months on the first subscription period. After that it renews at the normal 12-month price.

* The subscription is paid 12 months in advance.