Get reliable protection against power surges for your home office electronics with this 10-outlet, 120-volt battery backup system. 865-watt back-UPS features a surge energy rating of 354 joules. Connect additional batteries to provide an extended runtime in the event of a power outage. Dataline surge protection guards your connected equipment from power surges on the data lines. LCD shows various modes of operation, system parameters and alarms. Alarm notification signals you in real-time through phone or e-mail as critical events occur to maximize efficiency. Automatic voltage regulation steps up low voltage and steps down high voltage to levels that are suitable for your electronic equipment. Wiring fault indicator informs you of potentially dangerous wiring problems in the wall circuit.