Input Nominal Input Voltage: 220/230/240 Vac Operating Voltage Range: 162-290 Vac Operating Frequency Range: 50/60 Hz (±10%) Output Output Voltage range (Batt. Mode): Simulated Sinewave at nominal voltage ±10% Frequency Range (Batt. Mode): 50 Hz or 60 Hz ± 1 Hz Transfer Time: Typical 2-6 ms Battery Battery: 12V / 9 Ah Typical Recharge time: 6-8 hours ( To 90% capacity) Protection Full Protection Overload and overcharge protection Indicators Indicators AC Mode Battery Mode Load Level Battery Level Alarm Battery Mode: Sounding every 10 seconds Battery Low: Sounding every second Overload: Sounding every 0.5 second Battery Replacement Alarm: Sounding every 2 seconds Fault: Continuously sounding Management USB port Supports Windows® 2000/2003/XP/Vista/2008 Windows® 7/10 Environment Operating Temperature 0- 40°C Humidity Range 0-95 % (Non-condensing) Noise Level <40dB (1 meter from surface) Physical Dimension D x W x H: 380x158x198mm Net Weight: 11.1 kg Standards Safety: IEC/EN62040-1;IEC/EN60950-1 EMC: IEC/EN62040-2;IEC61000-4-2;IEC61000-4-3;IEC61000-4-4;IEC61000-4-5;IEC61000-4-6;IEC61000-4-8