Automatic door accessory is widely used in offices, shopping malls, hotels, etc., and provides a balance between function and aesthetics by providing different function switches according to different needs. In order to beautify life, it is the pursuit of the taste of life, with a lasting passion and motivation to finalize extraordinary tolerance. The design of the F Magnetic lock special for the automatic door is the same as that of the electromagnet. When the current passes through the silicon steel sheet, the electromagnetic lock generates a strong suction force and tightly attracts the adsorption iron plate to achieve the effect of locking the door. As long as the small current electromagnetic lock will generate a large magnetic force, the control system of the electromagnetic lock power supply control system will be powered off, and the electromagnetic lock will lose its suction to open the door.