From the Manufacturer
The Back-UPS Pro is designed to provide high-end power protection of business workstations and stand-alone computers. Boost and Trim Automatic Voltage Regulation (AVR) automatically corrects the deepest brownouts and over-voltage conditions without using the battery thereby preserving battery power for times when its really needed. Built-in fax/modem or network dataline protection prevents surges traveling on phone or network lines from entering the computer and destroying the modem or Network Interface Card. These features combined with a fast recharge time, hot-swappable batteries, bi-weekly auto-diagnostic testing and compatibility with network manageable PowerChute Plus software makes the Back-UPS Pro the product family of choice for workstations and other business computers.
Product Description
AMERICAN POWER CONVERSION (BP420SUS) APC BACK-UPS PRO 420VA 120V NAFTA