3000wat modified sine wave power inverter,high efficiency power inverter power inverter,mdofied sine wave CE&ROHS, Function details ... .9A0.45A0.28AAC output frequency60HZ50HZAC output waveformModified Sine Wave Efficiency>85%>88%>90%>85%>88%> ... Inverter will automatically shut down if load exceeds inverter rating; 7, Covered under a 1 year limited warranty; 3000watt mdofied sine wave power inverter ...