. High input power factor . Low input harmonic distortion (THD) . High efficiency >93% . Start from battery feature . Static and maintenance bypass . Overload and short-circuit protection . Emergency shutdown button input . 128 fault status memory (128 events, 3072 alarms) . Calendar, clock and operating hours display . Automatic battery test hardware, remaining battery time indicator . Temperature-dependent battery charging voltage adjustment . Modem connection for dial-up connection . RS232 serial communication and dry contact alarm relay outputs . Transformer options at input and output depending on the application . SNMP and MODBUS communication system . Compliance with international standards . 2-year warranty . 10-year spare parts warranty . Company services in accordance with TUV-ISO9002 standards