... efficiency over 97.8% MPP control RS485 RS432 bluetooth DC-switch CE/ VDE/ TUV/SAA/DK5940 Multi language display Growatt 3000 ... complied: EN61000-6-1, EN61000-6-2, EN61000-6-3, EN61000-6-4,EN61000-3-2, EN50178, VDE0126-1-1,IEC-62109Technical ... and approvalsCE/TUV EN50178,VDE 0126-1-1,EN6100-3-2 DC SWITCH Growatt 3KW Solar Power Inverter