I've installed these for a number of years as a decent, budget-friendly UPS for network components. Of the last 5 units I've installed, 4 have been defective (so far)...I'm not holding out much hope for the 5th. A UPS should be the most reliable part of your setup - this one is far from it. I can, unfortunately, not rely on Tripp-Lite anymore and have had to switch to another (more expensive) brand. Perhaps you do just get what you pay for, but these experiences have soured me to any Tripp-Lite product. If you can't build a working product at this price point - don't.