... inverter,high efficiency power inverter power inverter,mdofied sine wave CE&ROHS, Function details ModelMK-3000M-121MK-3000M-241MK- ... 45A0.28A0.9A0.45A0.28AAC output frequency60HZ50HZAC output waveformModified Sine Wave Efficiency>85%>88%>90%>85%>88%>90%DC input voltage ... you choose as your need Products Feature 1, Modified sine wave output waveform; softstart function; 2, Built-in thermal cooling ...