The roller shutter door (roller gate) is a series of multi-joint movable door pieces connected together in a fixed slideway, and the upper and lower doors are rotated around the roller shaft above the door. Roller blinds are often widely used in shops.

The roller shutter door acts as a horizontal partition like a wall. It consists of a curtain board, a seat board, a guide rail, a support, a reel, a box, a control box, a door roller, a limiter, a door lintel, a manual quick release switch device, and a button switch It is composed of multiple parts such as a safety device and is generally installed in a place where it is inconvenient to use wall separation.