The MINUTEMAN PRO-E. Series of Uninterruptible Power Supplies (UPS)delivers complete protection from electrical problems . spikes,surges, sags, brownouts, and blackouts. The PRO1100E are only slightlylarger in physical size, yet each offers an expansive six (6) outlets withbattery backup and surge protection and heavy power-handlingcapabilities found in much larger-sized models. This size-to-powerratio makes them ideal for high-power requirement devices installedin cramped quarters.