250w 1600rpm Rolling Shutter Motor, 220Vac+-110Vac

Features : 1. Electronic soft-start. 2. Gate auto stop and re-open when an obstacle is encountered. 3. Auto close time can be adjusted from approximately 3 to 120seconds. 4. When power failure , use a allen key to release clutch, and push the door manually. 5. Nicedesin, heavy duty working with copper motor (many supplier use allumium motor), copper worm gear. 6. Dc type can put transformer and back up battery inside. 7. The structure of integrated mechanic part and electronic part with built-in control panel, no any external controllers needed. 8. Intelligent automatic heating function Automatically increase the temperature when the temperature is below 0 degree.