PRODUCT FEATURES 1. MPPT(maximum power point tracking) effectively track and lock maximum power output of solar panels. 2. When the inverter track the maximum power point of the solar panel, it will automatically locked and with stable output. 3. 4 independent MPPT（MPPT). 4. standard MC4 input port，easy and safe installation. 5. Integration AC output port. 6. Pure sine wave output. 7. anti-islanding protection function：inverter will automatically stop output when the utility grid off or fault. 8. Over-temperature protection, short current protection and over-load protection. 9. IP65 waterproof function.