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.


Where can I find the registration and serial number of the device?

The registration code is embedded within the QR code. The serial number (SN) can be found on the front face of the device.

Where/How should I position the device to ensure high quality GPS positioning?

The correct device orientation can be found in your device's installation manual. Do not place the device under metal enclosures.

I can't login to the application

Please verify that:

  • You are properly connected to internet (WiFi, 3G or 4G)
  • You are using correct credentials (username and password)

I am receiving notifications that the boat has moved. Why?

You may have activated the "anchor alarm" functionality, and the Sentinel service is warning you that your boat has moved from its initial position.

What happens when the device has low internet reception (low 3G or 4G signal)?

The device will store the captured data (routes, battery status, alarms, etc) on the device until internet connection is secured. Then, the data will be uploaded and you will be able to see it in the Sentinel apps.

My application is not showing fresh boat's data

You may be in an area without mobile Internet coverage (3G or 4G - LTE). The information will appear on your device when strong mobile signal is available.

After completing the activation process (registering the device and creating an account) there is still no data visible in the mobile app.

One of the following may be happening:

  • The device has not yet started sending data to the server. In some cases, it may take up to 15 minutes after the device is activated and turned on for the first data point to appear.
  • The device may not be connected to an Internet network.
  • The SIM card is not yet activated. Please contact Sentinel support.

The route has been drawn over land.

Due to the sampling frequency it may occur that the route is occasionally (but rarely) drawn over land. If this occurs frequently, please inform the Sentinel technical support using the Report Issue button in the app.

Is there customer support available in case I’ll have any add additional questions?

Of course. To access support it is best that you use the "Report Issue" button in the app. Alternatively, you can write as on

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