SolaHD Uninterruptible Power Supply, Mini Tower Off-Line, Series: S1K, 115 VAC Input, 115 VAC Output, 320 VA, 50/60 Hz, 10 min Backup, 4 Outlets, 3 Battery/1 Surge Outlet, NEMA 5-15P, NEMA 5-15R, 6 ft Cord, DB9 Interface, Lead Acid Battery, Environmental Conditions: 0 to 40 deg Operating, -15 to 50 deg Storage, 0 to 90% Non-condensing Relative Humidity, < 40 dBA Audible Noise, 5.3 in H x 3.8 in W x 10.4 in D