Power – UPS Isis 850L, Line interactive, 850 VA, 480 W, Tower, Nominal Input Voltage 220Vac, Accepted Input Voltage Range 170-280Vac, Accepted Output Voltage Range 200-250Vac, Frequency 50 / 60 Hz Auto detection, Surge Protection 480 Joules, Transfer Time to Battery / AC < 4 ms, RJ45/RJ11 Protection, 2 Outlets with Battery Backup & Surge Protection, Battery Specification 1