Tripp Lite's SmartPro SMART 2200NET Extended Run Line-Interactive UPS Tower with 3 DB9 Ports protects servers, networking accessories and telecommunications equipment from blackouts, voltage fluctuations and transient surges. Large internal batteries offer 27 minutes half load run time and 11 minutes fully loaded. The runtime is expandable with optional external battery packs. 2,200-volt-ampere/1,700 watt power handling capability supports a variety of networking, telecom and other sensitive electronic applications. It includes 6 protected outlets and supports remote monitoring of UPS and site power conditions via built-in RS-232 enabled monitoring port, plus standard UPS monitoring via 2 built in contact closure ports. PowerAlert UPS monitoring and unattended shutdown software is available via free download. Built-in audible alarm and front panel LEDs indicate line power, battery power, battery charge level, load level, plus voltage regulation status. Network grade AC surge suppression protects equipment from damage and performance problems resulting from transient surges.