• Advanced DSP and 3-Level technology• Output power factor 1.0 • Active power factor correction (APFC), input power factor up to 0.99 • High efficiency 95% (up to 98% in ECO mode) • Advanced digital parallel technology • Wide input voltage range (110 - 288 Vac) and frequency range (40 - 70Hz) • 50 / 60 Hz frequency auto sensing • Two modes of frequency conversion: 50Hz input / 60Hz output or 60Hz input / 50Hz output • Hot-swappable battery • Flexible battery configuration (settable 16 - 20 pcs batteries) • Digitally controlled charger • High charging current available (Maximum 5A for long run model) • Charging voltage and current configured by demands • Linear debating in low voltage input reducing battery dischargin times, extending the service life of battery • Intelligent battery management, automatic floating / equalizin charge control, charger dormancy control, increasing battery life by 50% • Ability to switch on the UPS with batteries • Settable delayed start time when mains power is restored, reducing the impact on power grid or generator • Fan speed varies intelligently with temperature, reducing noise and extending its service life • Equipped with self-aging function • Compact internal layout, miniaturized the complete unit for small footprint • LCD+LED display, multi-functional keys operation, friendly human-machine interface • Powerful background software for parameters configuration • Advanced multi-platform communications: RS232, USB, RS485, SNMP and dry contacts communication interfaces • Effective software and hardware protection function, robust and self-diagnostic function, and abundant event log for check AVAILABLE OPTIONS • RS232 and smart card slot included • Optional parallel function, battery temperature compensation, SNMP card, USB, RS485 card, dry contacts, EMD, and SMS alarms