Tripp Lite provides a wider variety of line-interactive UPSs, compared to standby models. Available features on select models include: intelligent operation—to allow the UPS to relay more detailed operating conditions through PowerAlert power management software; extended run capability—to allow extended battery backup runtime for critical systems during a blackout; phone/DSL, Ethernet and Coaxial surge protection options—to safeguard equipment on Internet, audio/visual, or network connections; small-footprint rackmount, tower and low profile cabinets—to save space in every application; and communication port(s) and PowerAlert Software (FREE, included or as a web download)—to automatically shut down unattended systems.