Output voltage: 220VAC 50Hz with 2Hz more or less. Output waveform: modified sine wave. Input voltage range: 10-15VDC. Fuse: 10A/15A/20A/40A/70A Low battery alarm (normal): 10.4-11V. Low battery shutdown point (normal): 9.7-10.3V. High battery shutdown point (normal): 14.5-15.5V. Battery drain with no AC load (at 12V input) : <0.3A. Peak efficiency: >90%. Continuous AC output power: 80W/120W/240W/400W. 30-minute AC output power: 100W/150W/300W/500W. Maximum AC output power: 200W/300W/600W/1000W. Provide 150 watts of AC power and 300 watts surge power. Audio alarm warns of low battery level prior to auto shut down. Safely shuts down if over temperature or overload condition. Operate a 13″TV for about 5 hours from a typical car battery. Operate home or office electrical products from a vehicle or a boat. Supply 150 watts of AC power from a 12-volt outlet or battery.