The function of the anti-theft buckle for hotel doors is to be installed on the inner side of the door to prevent the person opening the door from being attacked outside the door. When the anti-theft chain is attached, the door can only be opened to a maximum of 5~8 cm. When the owner opens the door to confirm the identity of the visitor, he will not be suddenly attacked by the other party. The RDA-16B anti-theft buckle of Lelang Hardware also has a rubber protection design, which makes the anti-theft buckle more fashionable and versatile, quieter, and better protection. The door buckle is more durable, feels better, and is beautiful to prevent scratches on the facade.