1[Working Principle] Solar micro inverter is a device that converts solar panel DC into AC, with small size and capacity, commonly used in small solar system. 2[Usage Requirements] To make the grid tie micro inverter work properly, it must be connected to the grid normally, and when the grid stops working, it will also stop generating electricity. 3[Positive And Negative Ends] The positive and negative ends of the solar panel should not be connected backwards. If you extend the solar panel cable, you should be careful about this issue. 4[Installation Environment] This microinverter supports IP55 protection rating, but it should be installed to avoid direct sunlight and rain, and placed in ventilated, dry and cool conditions. 5[Voltage Requirement] To ensure normal operation, the voltage of the PV panel should not exceed the maximum input voltage of the solar grid tie inverter (Voc<50V).