Liebert PSI-XR is a compact, line-interactive UPS system designed especially for IT applications such as network closets and small data centers. The flexible design of Liebert PSI-XR allows the unit to be configured as a self-standing tower or to be rack-mounted within a 2U space. It is available in four capacities, in both 230V or 120V models.nnThe UPS features an innovative line-interactive design incorporating buck/boost automatic voltage regulation technology. This protects against utility voltage fluctuation by raising and lowering utility power to the level needed by the connected equipment. It also allows the UPS to prolong battery life by maximizing its time on utility power before going to battery.nnLiebert PSI-XR Standard Features:nFlexibility:n- Six to seven battery-backed outletsn- Configurable input voltage windown- Rotatable Display Paneln- Automatic Frequency Sensingn- Multiple Communications Options (Serial, USB, SNMP and Contact Closure).