Maximum efficiency over 97.8% MPP control RS485 RS432 bluetooth DC-switch CE/ VDE/ TUV/SAA/DK5940 Multi language display Growatt 1500 2000 3000 4400 5000 TLGeneral Descriptions Leading-Edge Technology, CE,TUV ,VDE , SAA,DK5940 Certicificates.> Maximum efficiency of 97.8 % and wide input voltage range> Internal DC STWTICH> Transformerless H6 topology> Compact Design> MPPT control> MTL-String> ...