AC&DC Door Shutter: 1.Lifting force:600kg 2.Function:AC and dc 3.Rated Power:250w 4.Small size, light weight Feature of AC&DC Door Shutter1.Attractive appearance, advanced structure, horsepower strong;2.Configuration high-power low loss ring transformer, utility can direct drive motor;3.Low noise, small vibration, low consumption;4.Light weight, small size, convenient installation, long life and ...