SMART3000NET Intelligent line-interactive large tower UPS system protects servers, networking accessories and telecommunications equipment from blackouts, voltage fluctuations and transient surges. Large internal batteries offer 23 minutes half-load runtime and 7 minutes fully loaded. Runtime is expandable with optional BP24V28-2U (limit 1) and BP24V70-3U (multi-pack compatible) external battery packs. 3000VA/2400W power handling capability supports a variety of networking, telecom and other sensitive electronic applications. Includes eight protected outlets. Supports remote monitoring of UPS and site power conditions via built-in RS-232 enabled monitoring port, plus standard UPS monitoring via two built-in contact closure ports. PowerAlert UPS monitoring software is available for free download. Built-in audible alarm and front-panel LEDs indicate line power, battery power, battery charge level, load level and voltage regulation status. Network-grade AC surge suppression protects equipment from damage and performance problems resulting from transient surges.