STT 4~25kW Three Phase | 2 MPPTs | ON Grid High reliability due to good heat dissipation design Integrated lightning protection for both DC and AC SAFE & RELIABLE Adapt to complex power grid High anti-corrosion ability with aluminum alloy die casting technology Wider working temperature and altitude, adapt to various installation environments High yield with Max. 98.6% efficiency European weighted efficiency 98.2% HIGH YIELD Longer working hours due to the lower start-up voltage and wider MPPT range Up to 10% continuous output overloading capacity With a max input current of 15A, compatible with high-power panels Support wireless and wired internet connection (RS485, WiFi/GPRS/LAN optional) Remote upgrading available Fast and easy configuration via App or OL