The POWERLINE DUAL 11/31 series is the newest family of hi-tech UPS units with configurable inputs (3 or 1 phases at the unit’s input).The series features ONLINE (VFI) devices that guarantee excellent protection to the connected receivers. They protect sensitive equipment and systems from common power-related problems such as power outages, drops and interruptions in the mains, surges and other faulty conditions in the power supply line. EVER POWERLINE DUAL series UPS units are mainly used with servers, networks, data processing systems, various electric, electronic and IT devices. POWERLINE DUAL 11/31 UPS units are available only as Tower models. Up to 4 units can be connected in parallel for increased reliability or to meet higher power requirements. The UPS units can be extended with additional, external battery modules.