APC BACK-UPS 850VA 230V USB

Key Product Info . Maintenance-free sealed batteryLED status displayAlarm when on battery Product Features Adjustable voltage sensitivityProvides the ability to adapt the UPS for optimal performance in specific power environments or generator applications. Audible alarmsProvides notification of changing utility power and UPS power conditions Automatic self-testPeriodic battery self-test ensures early detection of a battery that needs to be replaced. Battery charging indicatorLets you know when your battery is charging and when it is fully charged. Battery failure notificationProvides early-warning fault analysis on batteries enabling timely preventive maintenance Building Wiring Fault IndicatorThis LED informs users of potentially dangerous wiring problems in the wall circuit. Cold-start capableProvides temporary battery power when the utility power is out. Dataline surge protectionProvides protection of connected equipment from power surges on the data lines. Disconnected battery noti