The Vertiv Liebert PSA is an economical line-interactive UPS that offers full-featured power protection for small office computers and electronic equipment. It offers unique features and extraordinary performance not normally found in similar products in this price range. The 230 VAC models are CE listed. The Vertiv Liebert PSA features battery backup and surge protected output receptacles. Includes a standard two-year warranty, with optional 1 and 3 year warranty extensions, that covers parts.