The panel is equipped with ATS interface? : external ATS control box, which can realize the connection of the home power grid, the perfect power outage helper. Inverter technology? : THD value? 3, output pure sine wave, can drive sensitive electronic equipment, such as mobile phones, laptops, video cameras, etc. Pure-copper winding motor? : the performance quality is better than that of aluminum motor. More durable, not easy to burn out the motor, Small resistance, low heat generation, more energy saving. ECO mode? : more energy-saving and noise reduction, maximize fuel economy, 26L large fuel tank under 25% load, running time up to 15h. Four-stroke engine? : high intake and exhaust efficiency, full combustion, economical and fuel-efficient.