Monster Cable PowerCenter HTUPS 3700 1500VA Rack-Mountable UPS Technical Information--Plug/Connector Type--IEC 60320 C14::Technical Information--Receptacles--11 x NEMA 5-15R::Technical Information--Switching Time--10 ms::Technical Information--Dataline Protection--RJ-11 Phone, RJ-45 Network, Coaxial Cable Line::Power Description--Load Capacity--1.50 kVA/900 W::Power Description--Input Voltage--110 V AC::Power Description--Input Voltage Range--120 V AC Nominal, 80 V AC to 130 V AC::Power Description--Output Voltage--120 V AC Nominal::Power Description--Frequency--60 Hz Input, 60 Hz Output::Power Description--Input Current--12 A::Interfaces/Ports--Interfaces/Ports--RS-232 Serial, USB::Interfaces/Ports--Modular Slots--Communications Slot::Battery Information--Batteries--Sealed Lead Acid::Battery Information--Backup/Run Ti UPS must be plugged in 24 hours for system to charge This item is non returnable. 1500 VA UPS battery backup. Automatic voltage regulation. RS232 Controllable. Exclusive CoolDown technology.T2 automatic disconnect/reconnect protection circuitry.