"The Protect C employs VFI topology to protect loads against all public grid disturbances. On the input side sine wave shape current consumption is achieved for all load conditions. High integrated circuits reduce the number of electric connections and components as well as a robust IGBT module, the result: less and more robust components increasing reliability. An automatic bypass provides security during overload. • double conversation UPS technology - protects against ALL mains power disturbances • 6 minute autonomy at 100% load • automatic bypass • communication slot for expansion cards such as SNMP • n+x technology for redundancy or increase power (C.6000 & C.10000) • CompuWatch control software and cables included for automatic shut down • Network Rail Approved (UK) • CS Range has extended run time feature ideal for CCTV applications Specially : 6000VA / 4200W,PARALLEL option Association Automatic battery testing (weekly). USB/RS232 interface. autonomy under 100% load 8 minutes, under 50% 25 min. RS-232 interface, 5 IEC 320, Dimensions :260x717x570, weight 90 kg, Software Shutdown,.Extra Battery Pack. "