The door catch is an important component in the machine used to hold the machine door. There are many types of doors catch such as Latch, mechanical catch, magnetic catch, and electromagnetic catch. That uses electric power to control the force of holding the door. In addition, it can also check the situation of opening and closing the door from the electrical signal of the sensor as well. In automatic machinery, systems are often used in machine safety systems. The equipment of the machine will not be able to work. while the machine door is open for the safety of operators The holding force of the door stopper should be considered appropriate to the size, weight, and strength of the door. If the clamping force is too light It may not hold the door. But if the clamping force is too much, it will make it difficult to open or cause the result in damage to the door while opening.