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For loggers that are less than two years old you can look up the sale date using the tool on our warranty page: http://www.nrgsystems.com/en/TechSupport/WarrantyInfo.aspx For older loggers you will have to send the serial number to support@renewablenrgsystems to be looked up for you.
Thanks for the feedback. Sorry to hear this limitation is causing you grief. I'll pass this on to our engineering group and report back here if any changes are made.
From time to time we’ve heard from customers whose GSM iPackGPS units have stopped calling, and are reporting a PPP_ERR. There are a number of different PPP errors that an iPack can generate but they almost always relate to the APN name, username or password of a GSM iPack. Here is the full list of PPP errors: The first step to getting the iPack working...