Grid Tie Inverter Single Phase PC Monitoring High Efficiency With Max. 97% 5 ... not to worry any power waste because, by connecting inverter to grid, it can save any surplus electricityFeatures:High ... C)Relative Humidity0¬100%(Do not wet with dew)Protection(Inverter) Input over-voltage, Output Short Circuit, Overheat, Overload, ... (IEEE1547), Over/Under Voltage of Grid, Over/Under Frequency of Grid