... 5r/m Feature of HH - AD24 ac/dc rolling door motor ·attractive appearance, advanced structure, horsepower strong;·Configuration high-power ... low loss ring transformer, utility can direct drive motor;·Low noise, small vibration, low consumption;·Light weight, ... distance remote operation; ·Reserve power supply on the market used batteries for universal product (4.5 Ah / 24v);·Controller of ...