The shutter door is horizontally separated from the wall. It consists of a curtain, a seat plate, a guide rail, a support, a reel, a box, a control box, a roll door machine, a limiter, a door sill, a manual quick release switch device, and a push button switch. It consists of 13 parts, such as safety devices, and is usually installed in places that are inconvenient to be separated by walls. Rolling shutters are suitable for public places or residences such as commercial facades, garages, shopping malls, hospitals, factories and mines. In particular, the door opening is large, and it is convenient and quick to open the place where the ground door body is inconvenient.