Output Voltage 220V AC(-10% ~ +10%) Frequency 50HZ(-0.1% ~ +0.1%) Efficiency OVER 83% Output Waveform Pure sine wave Overheated Protection 70 Capacity Range: 300W/12VDC 500W/12VDC 750W/24VDC 1KW/24VDC 2KW/24VDC 2KW/48VDC 3KW/48VDC