... .60%;(2) With dual MPPT. Suit-able for installing solar modules with different angle of dip;2.Safe(1) IP65 ... DC isolation monitoring , DC monitoring,Grounding fault monitoring , Grid monitoring , Island protection , Short circuit protection , Over temperature protectionDisplay and CommunicationDisplay3.5inches ... ,EN61000-11:12Maintenance5 years,(10 years Optional) Grid-tied Solar Inverter(4KW,5KW,6KW)