Capacity: 1200VA/720W / AVR: Yes / Battery: 2x12V9Ah / Transformer: 96x50mm / Output Socket: 3xC13+1xSchuko / Offmode Charging: Yes / Power Factor: 0.6 / AC Voltage Range: 140-290 / AC Frequency: Sync With AC / Output Range (Line): 220VAC +- 10% (Sine Wave) / Output Frequency(Line): Sync With AC / Output Voltage(Battery): 220VAC +- 6% (Square Wave) / Output Frequency(Battery): 50 +- 1Hz (Frequency Self-Adapt System) / Transfer Time: < 10Ms / Battery Protection: Yes / Battery Charging: 8 Hrs. To Fully Charged / Short Circuit Protection: Yes / Overload Protection: Yes / Operating Temperatures: 0C-40C / Storage Temperatures: -15C-45C / Relative Humidity: 0%-90% (No Condensation Water) / Noise: <35Db(1M From Front Panel) / Communication Interface: USB / Network Protection: RJ45/11 Surge Protector [p/n NK1200VA]