Tripp Lite UPS Smart Tower 1440VA 900W Battery Back Up Extended Run AVR LCD USB - Tower - AVR - 8 Hour Recharge - 4.60 Minute Stand-by - 120 V AC Input - 120 V AC, 115 V AC, 110 V AC Output - 8 x NEMA 5-15R

Maintains continuous 120V nominal output during brownouts and overvoltages Home-friendly alarm remains silent in backup mode, sounding only when imperative Protects equipment against blackouts, brownouts, overvoltages, surges and line noise Keeps AC power running during blackouts to allow time for file saves and safe shutdown 3-year limited warranty Compatible with optional external battery pack for extended runtime operation