​Metal keypad is another type of keypad. Its working principle is the same as that of ordinary keypad, and its internal structure is also similar. The difference is that because of its special metal material, the metal keypad has a solid appearance, which can achieve the functions that ordinary keypads do not have, such as explosion-proof, dust-proof and waterproof.



Therefore, it is widely used on input devices with special requirements for the environment. As an embedded device, metal keypad is widely used in financial equipment, communication equipment, military equipment and a series of self-service terminal devices. It is characterized by its strong metal materials and a series of special technical means, so that it can face the harsh environment conditions and use its special properties of waterproof, dust-proof, explosion-proof and anti-corrosion. Therefore, it is widely used in many outdoor self-service equipment.