Liebert GXT3 true on-line uninterruptible power system (UPS) combines low cost of ownership with rich functionality, small size & high capacity. This on-line UPS provides uninterruptible data center power for internal batteries, optional external batteries, & internal bypass capability, resulting in continuous uptime for the connected equipment & optimal data center design. Designed for rack-mount or tower modes, the Liebert GXT3 uninterruptible power unit is just 2U high.