Steve_1982
Contributor
Most inverters don't switch fast enough,that means even modem/routers can restart they also don't do voltage stabilization.
They use the name ups because people will understand what it is.
I have been using apc 1000uxi to power the entire house(lighting circuit only but includes pc/router,lcd tvs,led bulbs,ceiling/exhaust fans,air cooler) for the past 6 years.This way all the connected electrical devices gets stabilized voltage.
My APC non-pure sinewave UPS lasted 8 years without an identifiable issue and 2 weeks ago in its 9th year, it started causing a brand new motherboard with surge protection to shut down the computer due to voltage fluctuations.