Frequently asked questions

Please, take a minute to see if your question is answered in the FAQ of the device you are having trouble with. If you can't find an answer to your question, please contact us at for technical matters, or use our contact form for sales related inquires.


Can I switch the subscription plans?

Yes, you can upgrade your subscription plan using our online subscription management page.

What does the subscription cover?

The entire service, you have zero additional costs. What about the next year? You will easily renew the subscription in the online shop.

How do I buy a Sentinel product?

If your boat does not already come equipped with Sentinel Telematics (see our Partners page), you can purchase Sentinel products via our Delears network. For more information please contact us at

Is the subscription mandatory to start using my Boat Monitor?

Yes. A subscription is required to use your Boat Monitor.

Which countries are covered by the subscription?

European coverage:

  • Austria
  • Belarus
  • Belgium
  • Bulgaria
  • Croatia
  • Cyprus
  • Czech Republic
  • Denmark
  • Estonia
  • Finland
  • France
  • Germany
  • Greece
  • Hungary
  • Ireland
  • Italy
  • Latvia
  • Liechtenstein
  • Lithuania
  • Luxembourg
  • Macedonia
  • Malta
  • Monaco
  • Netherlands
  • Norway
  • Poland
  • Portugal
  • Romania
  • Serbia
  • Slovakia
  • Slovenia
  • Spain
  • Sweden
  • Switzerland
  • United Kingdom

Worldwide coverage:

  • Austria
  • Anguilla
  • Antigua and Barbuda
  • Aruba
  • Australia
  • Azerbaijan
  • Bahamas
  • Bangladesh
  • Barbados
  • Belize
  • Bermuda
  • British Virgin Islands
  • Burkina Faso
  • Canada
  • Cayman
  • China
  • Colombia
  • Congo
  • Costa Rica
  • Curacao
  • Dominica
  • Dominican Republic
  • Egypt
  • France Caraibe
  • Gibraltar
  • Grenada
  • Haiti
  • Hong Kong
  • Iceland
  • India*
  • Indonesia
  • Israel
  • Jamaica
  • Japan
  • Korea Rep.
  • Kosovo
  • Malawi
  • Malaysia
  • Mexico
  • Moldova
  • Montenegro
  • Montserrat
  • New Zealand
  • Nigeria
  • Panama
  • Puerto Rico
  • Qatar
  • Reunion
  • Russia
  • Saint Kitts and Nevis
  • Saint Lucia
  • Singapore
  • South Africa
  • Sri Lanka
  • St. Vincent & Grenadines
  • Taiwan
  • Thailand
  • Turkey*
  • Turks & Caicos
  • Ukraine
  • United Arab Emirates
  • United States
  • Vietnam
  • Zambia
  • and all the countries from the European coverage

* Roaming restriction might apply. Please be aware that coverage may change without notice due to factors outside Sentinel's control.

How will I be informed that my subscription needs to be renewed?

3 weeks before your subscription expires you will receive an email with instructions on how to renew your subscription. At the same time, both the mobile and web application will show an informative banner.

How do I renew my subscription?

Upon receiving the email that your subscription is about to expire, you will also be able to renew your subscription. In the web application, click on the Account dropdown menu and select "My Subscriptions". From there you will be able to manage the subscription plans for all your devices. After completing the renewal process for a device, future renewals are automated. You will receive an email notice before your card is billed every year.

Can I modify my subscription plan?

You can customize your subscription plan to fit your needs at any time. You can choose from different coverage areas (Europe, Worldwide), upgrade the number of allowed sensors and switches, and choose between additional features such as CZone Switching and Alerts and Sentinel Plus.

Can I downgrade my subscription plan?

Yes. The feature you have chosen to downgrade will continue working until the end of the active subscription term, but will not be extended with successive automatic renewals.

What happens if I allow my subscription to expire?

After a brief grace period monitoring functionality will be suspended. Renewal of an expired subscription incurs and additional re-activation fee.

I can't find the option to renew my subscription, please help!

You will be able to renew your subscription 21 days before your subscription expires. At that time, you will also receive an email with instructions on how to proceed. If you did not receive the email, and the option is still not present, please contact Sentinel support.

What if I don't use the activation PIN to activate my subscription?

If you do not activate the service within 1 year of purchase, your activation PIN will expire. You will have to buy a new subscription online.

Can I disable automatic renewals?

Yes, you can do so at any time. Any existing subscription will continue working until expiry.
To disable automatic renewal, in the web application click on the Account dropdown and select "My Subscriptions". Then, use the option "Manage automatic renewal" corresponding to your device.

Can I terminate my subscription?

You can cancel automatic renewal of your subscription plan at any time. Your device will continue working until the end of your subscription. If you wish to completely stop using the Sentinel services, and stop monitoring at once, delete the boat from the Sentinel application and unplug the monitoring device from power.

What payment options are supported?

We currently support Mastercard, Visa and PayPal.

Will taxes be included in my invoice?

Sentinel is required by law to apply tax charges, which are based on the location of your residence you provide in the billing details.

How do I add a VAT ID number to my account?

We currently do not support adding VAT ID when using our online subscription renewal process. If you are a VAT-exempt business and need to renew a subscription please contact Sentinel support.

What is the difference between CZone Lite and CZone Unlimited?

The CZone addon allows you to remotely switch selected CZone circuits and receive alerts from the CZone system. Two flavours of the addon are available: Unlimited and Lite

The CZone Unlimited addon allows you to:

  • Receive all alerts generated by the CZone system.
  • Select and switch an unlimited number of CZone circuits. These are excluded from the subscription plan size limit.

The CZone Lite addon allows you to:

  • Receive all alerts generated by the CZone system. Some restrictions apply, see below *.
  • Select and switch** a limited number of CZone circuits. Each selected switch takes one slot in your subscription plan size limit.

* The behaviour of CZone alerts is different between Lite and Unlimited addons. With Unlimited, alerts that are cleared in the CZone system but triggered again will fire a push notification to the Sentinel app automatically. With Lite, alerts need to be cleared manually in the Sentinel app in order to receive new alerts from the CZone system (from same source).

** When using CZone Lite, toggling a circuit in the CZone system will sync to the Sentinel app no later than every 20 minutes. Toggling a switch in the Sentinel app is reflected immediately in the CZone system. With Unlimited, the sync is always immediate.

The CZone addon is not needed if you are only interested in monitoring CZone circuits (without switching and CZone alerts).