The document summarizes the specifications and features of the UniStar Series C UPS system. It provides ratings for 1kVA, 2kVA, and 3kVA models in 120/120V and 230/230V configurations. It describes the on-line double conversion technology that provides clean AC power independently of utility power. It also lists the system's high efficiency, voltage and frequency tolerance windows, internal bypass, user interface, communication options, battery management, and optional extended runtime battery packs.