1.) If the network/internet outage is less than 15 minutes, then the device should have enough on-device memory to be able to store all of its measurements and will be able to upload all of that data when it regains its connection.
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2.) If the network/internet outage is longer than 15 minutes, it will continue to monitor your usage, but will lose the ability to save all of its measurement data because of internal memory limitations. In this situation, the device will still monitor your cumulative usage during the outage. Once the connection is regained, it will take the before and after cumulative measurements to get a total amount of usage for the duration of the outage. It will then take that total usage amount and average it over the time period of the outage. This means that the seconds and minutes (and perhaps hourly and above) measurements will have the same values because they are the averaged numbers from during the outage. The cumulative usage total should still be correct.
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For best performance, we highly recommend ensuring the Gen 2 has a constant and stable WiFi connection.
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We may look at offline data access as an option for a future model of the Vue monitor, but this possibility is still a ways down the road.
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If you need us to clarify any of the offline behavior of the Gen 2, feel free to send your questions to the Customer Support team.

Feedback and Suggestions

This knowledge base is pretty new for the Emporia team. Our goal is to provide all of the information we can to help you manage your energy in better ways. If this article wasn't helpful, or we could be more clarifying on any points please reach out to the Customer Support team and we'll certainly work to improve these guides.