@teresacarter,

100%

However, All a UPS will do is create a battery backup that will start being used as soon as the power is switched off. This means that you would most likely only have access to files and media on your local network.

The times in which a UPS can function can vary greatly, so make sure you get one that is capable of sustaining your Deco for as long as possible. Also, if you are trying to access the internet while there is no power, this is normally not possible, unless you have a fiber connection and have confirmed that your ONT does not require power.