APC Symmetra, 6000VA/4200W, Input 208V/ Output 120, 208V, Interface Port DB-9 RS-232, RJ-45 10 Base-T ethernet for web/ SNMP/ Telnet management, Extended runtime model Features: Audible Alarms, Automatic Self Test, Battery modules connected in parallel, Built-in automatic bypass, Built-in manual bypass, Built-in SmartSlot, Built-in Web/SNMP management, Double Conversion On-Line, EPO, Hot Swap Batteries, Hot Swap Electronics, Input Power Factor Correction, Intelligent Battery Management, LCD AlphaNumeric Display, N+1 Redundancy, Overload Indicator, Rack Mount, Replace Batt Indicator, Scalable Power Capacity, Scalable Run Time, Software, User Replaceable batteries, Wide input voltage range Includes: CD with software, Rack Mounting Brackets, Rack Mounting support rails, User Manual