User friendly LED display for easy operation Mix of battery-backed and surge-only sockets to adapt to different types of loads and requirements USB communications/shutdown software and cable included for plug and play use User replaceable batteries to maximize initial investment Offers multiple battery backed and surge protected sockets 3 Years standrad warrarnty Protects datalines Fully RoHS compliant The Liebert PSA is a compact line-interactive UPS that offers cost-effective, full featured power protection for small office computers and electronic equipment Designed with simple controls for easy operation, the Liebert PSA provides up to five minutes of back-up time at full loadmore than enough time to save work in process and shut down your system. Shutdown software and a USB cable are also included, to allow remote alerts and automated graceful shutdown of the connected systems. Features Audible alarm(s) Yes Surge protection Yes Output power factor 0.6 Power factor 0.6