Specifications: Input voltage range 10-15V DC (12VDC) Under voltage shutdown activation 10.0 Volts Over voltage shutdown activation 15.0 Volts Wave form modified sine wave Input DC voltage could be either 12V or 24V Output AC voltage can be customer-made according to different countries 110VAC/220VAC/240VAC Output power: 75W, 100W, 150W, 300W, 500W Maximum efficiency approx 90% Overload protection. Cigarette lighter plug Thermal protection: 65+/-5 degrees Celsius The parameter you are reading now is based on DC 12V input