Hello @****-6175​ ,

Thank you for asking your question in our community. If you are referring to the a loss of signal when the GO device goes offline line then no there is not an immidaite alert. Since the device has no internal battery we cannot get an immediate alert. My best recommendation is use this modified watchdog reprot that can alert you within 30 minutes to any devices that have potentially lost signal: https://marketplace.geotab.com/solutions/watchdog-report-by-minute/

Let us know if you have any other questions. We are always happy to help.

Have a good one!

Eishi FUN