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BX1100LI-MS Features APC Back-UPS 1100VA, 230V, AVR, Universal and IEC Sockets Battery Backup & Surge Protector for Electronics and Computers Includes: User Manual, Warranty card Audible alarms Provides notification of changing utility power and UPS power conditions Automatic self-test Periodic battery self-test ensures early detection of a battery that needs to be replaced. Automatic Voltage Regulation (AVR) Automatically steps