Emerson Network Power’s Liebert PSI uninterruptible power supply (UPS) system provides reliable and economical line-interactive backup power protection for smaller IT spaces, including network closets, IT rooms and home offices. The Liebert PSI gives users five minutes of battery backup at full load, as well as the ability to remotely monitor and shut down connected equipment via Liebert MultiLink software. The UPS is rack/tower convertible and is available in 1,000 VA, 1,500 VA, 2,200 VA and 3,000 VA in 120-V and 230-V models.