1、Time Delay: With door close time delay function, will lock until the door completely stop moving, rather than lock instantly, effectively protect the door and lock from damage. 2、Increased Security: The electric drop bolt lock has 205 levels of security protection, making it a convenient choice for both residential and commercial applications. 3、Aluminum Alloy: The electric drop bolt lock is made of aluminum alloy material, firm, antirust, durable to use, and is impact resistant and wear proof. 4、Compact: Designed specifically for narrow doors, this bolt lock provides a sleek and compact solution without compromising on security, making it an ideal choice for small spaces. 5、Wide Application: Suitable for office buildings, homes, apartments, and more, this lock offers a versatile and reliable access control solution for various security needs. 1 x Electric Drop Bolt Lock2 x Metal Plate1 x Pack of Screw Item Type: Electric Drop Bolt LockMaterial: Aluminum AlloySize: Approx. 21x4x4cm/ 8.27x 1.57x 1.57in Note: Due to the light and screen setting difference, the item's color may be slightly different from the pictures. Please allow slight dimension difference due to different manual measurement. Sold by-dadangjia