... 50Hz 4.Output Speed:5r/m Feature of HH - AD24 ac/dc rolling door motor ·attractive appearance, advanced structure, horsepower ... market used batteries for universal product (4.5 Ah / 24v);·Controller of energy conservation and environmental protection lighting, delay cabin for ... 3 minutes. 500kg AC/DC Rolling Door Motor:1.Low noise, small vibration.2 ...