Tripp Lite's TE600 UPS System provides line-interactive voltage regulation and long lasting battery support for small business telephone systems, voicemail systems, personal computers and other communications, network and telecom applications. 600VA power handling capacity and large capacity battery system maintains continuous operation through power interruptions with over 1 hour runtime for many phone systems. Line interactive voltage regulation maintains normal 120 volt output levels during brownouts as low as 75 and overvoltages as high as 147, saving battery reserves for use only during complete power failures. Unique design features 6 protected outlets (3 UPS supported & 3 surge-suppression only), diagnostic LEDs and a built-in serial port that works with PowerAlert Software and cabling to provide automatic unattended shutdown of network and PC applications (part# 75-0195). $200,000 Ultimate Lifetime Insurance (USA & Canada Only).