... / BG5KTL / BG6KTL are transformerless inverters with high efficiency. With aluminum housing, Integrated interface system, they ... over 97.60%;(2) With dual MPPT. Suit-able for installing solar modules with different angle of dip ... Integrated DC Switch (Lockable-off);4.Communication(1) With strong networking, flexible to support RS485, Ethernet, ... years Optional) Grid-tied Solar Inverter(4KW,5KW,6KW)