We are running a SmartUPS 700 for the computer and Amaya, with 17" monitor. No beeps or anything. We are in the same boat...just down the road from a sub-station and this area of town has not had new lines upgraded. Everything for computers and plotters, engraver, etc.are all on SmartUPS from 420 to 700. Could not get one for the laserprinter....that's the only thing not on one. Saved us many times from brown outs and complete poweroutages. I think even Staples has them-got ours through on-line discount computer stores (MacWarehouse, etc. but they are gone)