TRIPP LITE AVR700UXRM 700VA 350W UPS Desktop Extended Runtime Battery Back Up with AVR 120V USB Muted Alarm 700VA ultra-compact 120V line interactive UPS Corrects brownouts and overvoltage's from 83V to 147V Corrects brownouts and overvoltage's from 83V to 147V Audible alarm is muted for full-time silent operation 3-year limited warranty (U.S. & Canada)