Never used, New in Box. MAKE sure to Look at pictures!

TheBack-UPS RS 500fromAPCis used as a UPS battery backup and surge protector for electronics and computers. Featuring three outlets with an output capacity of 300W / 500 VA, this device provides enough backup power to work through short- and medium-length power outages, as well as protect your system from damaging surges and utility line spikes. The RS 500 also features "boost" automatic voltage regulation (AVR), which instantly adjusts low voltages to safe levels, so you can work during under-voltage situations.

Adjustable Voltage SensitivityProvides the ability to adapt the UPS for optimal performance in specific power environments or generator applicationsAdjustable Voltage-Transfer PointsMaximizes useful battery life by widening the input voltage window or tightening the output voltage regulationAudible AlarmsProvides notification of changing utility power and UPS power conditionsAutomatic Self-TestPeriodic battery self-test ensures early detection of a battery that needs to be replacedBattery Failure NotificationProvides early-warning fault analysis on batteries enabling timely preventive maintenanceBoost Automatic Voltage Regulation (AVR)Preserves battery life and maximizes runtime by correcting low voltages without discharging the batteryResettable Circuit BreakerEasy recovery from overloads, no need to replace a fuseSafety-Agency ApprovedEnsures the product has been tested and approved to work safely with the connected service provider equipment and within the specified environmentStatus Indicator LEDsLED status indicators for each phase and an audible alarm provide immediate failure notification when surge suppression circuitry has been damaged by a heavy strike or surge