Tripp lites smx2200xlrt2u intelligent line interactive racktower uninterruptible power supply prevents data loss downtime and equipment damage due to power outages voltage fluctuations and transient surges requires only two rack spaces 2u in a standard rack enclosure large internal batteries offer 17 min half load runtime and 6 min at full load runtime is expandable with optional bp48v24 2u or bp48v60rt 3u external battery packs maintains regulated 230v nominal output without using