IMAGE&reg; New 300W Grid Tie Power Inverter Converter for Solar Panel System with High-Frequency High Conversion Rate High-Frequency High Conversion Rate, Adapt high frequency converter, the output more efficient. Maximum Power Point Tracking (MPPT), Current Limit Protection Automatically Adapt To Different Load Power Factor,? Constant Current, Constant Power Stack Multiple Machines,? Power Automatically Locked (APL) Automatic Sensing Function Solar Luminosity,Pure Sine Wave Output