*Requires External battery * The Centurion RT features true online double conversion. As our highest single phase power density UPS, this sophisticated range will provide the most comprehensive protection for mission critical devices such as sensitive networks, computers, servers, telecom applications, as well as industrial applications. Centurion RT Features: True online double-conversion Exceptional surge protection Easy-shift LCD display Rack or tower design Emergency power off function Eco and advanced ECO mode operation for energy saving Standard extra large charger How swappable batteries