APC SRT 1000VA 230V Smart-UPS (SRT1000XLI) - Max Configurable Power (Watts): 1.0kWatts / 1.0kVA, Input frequency: 40 - 70 Hz Auto-sensing, Output Frequency (sync to mains): 50/60 Hz +/- 3 Hz Sync to mains, Load Crest Factor: 3 : 1, Bypass: Built-in bypass, Number of Power Cords: x 1, Included Battery Modules: x 1, Interface Port(s): RJ-45 Serial, Smart-Slot, USB, Expected Battery Life: 3 - 5 years