What size UPS can I use to power the Arlo Pro base station when outage happens?

[otterpup]

What size UPS can I use to power the base station for a day, in the event of electrical service outage?

[jguerdat]

You also need to to power the router and modem so the base can continue to connect to the servers. I happen to use a 750VA UPS which has last a few hours but don't know how much longer it would supply power (I'm not gonna listen to the beeping from the UPS that long). The math suggests about 18 hours. It all depends on how long you need it to stay powered and then compare that to the cost.