Features: Door Motorare suitable for roll updoor and window system of dwelling house, office, shops, hospitals and so on. By the remote controller closingand opening the door automatically. Roll Up Motormakes our daily life more convenient. 1)Manual operation: the manual operation also can be work while the power off. 2)Installation: Easily to install the main machine and the side-board 3)Driving device: the driving devicesaremadeof quality steel which has special heated process, high strength and anti-wear 4)Electric motorequipped with auto-heat protection system, large starting moment, low noise, low power wastage. 5)Legerity design, powerful driving.