Bộ lưu điện APC SRV2KIL - APC Easy UPS On-Line SRV Ext. Runtime 2000VA 230V with External Battery Pack - High quality, Double-conversion On-line UPS designed for essential power protection needs even in the most unstable power conditions -Includes: Basic UPS signalling RS-232 cable, CD with software, Country-specific detachable power cord, Qty 1 - DC Cable, USB cable, User Manual