The Vertiv Liebert GXT3 1000VA UPS, Mini-Tower Model is a compact, true online UPS that continuously conditions and regulates its output voltage. The Vertiv Liebert GXT3 is designed to supply microcomputers and other sensitive equipment with clean sine wave input power. Upon generation, AC power is clean and stable. However, during transmission and distribution it is subject to voltage sags, spikes and complete failure that may interrupt computer operations, cause data loss and damage equipment. The Liebert GXT3 protects equipment from these disturbances. The Liebert GXT3 continuously charges its batteries from utility power, enabling it to supply power to connected loads, even when utility power fails.