Backup Power Supply APC Smart-UPS SC 620VA:This high-quality backup power supply is designed for demanding tasks via a serial communication port. It features a PowerChute Plus software, line-interactive technology, and SmartSlot to enable extending features. With its other accessories, you can monitor ambient temperature or pollution, perform management operations via the network (SNMP 10Base-T or a Token Ring) or modem. The device features LEDs on the front panel that inform about power on/off, power overload, undervoltage or overvoltage in the network, battery charge, battery operation, and battery replacement.Parameters and Specifications:Capacity VA/W:620/390Technology:Line-interactiveCommunication Interface:Serial communication port (DB-9 RS-232)Output voltage:Stepped approximation to sinewaveInput connector:IEC-320 C14Output Connector:3x IEC 320 C131x IEC320-C13 with overvoltage protection only1x RJ11 (In/Out)Battery:Replaceable while running, lead-free, maintenance-free batteriesMax. load: 5.5min (390W)Half load: 15.7min (195W)Dimensions:167 x 119 x 36.8 mmWeight:12.2 kg