Multiple Use: The sliding lock provides ideal protection against the opening of flush doors. The lock is equipped with a customizable 4-digit code lock that allows you to effectively lock a wide range of doors, such as cellar doors, gates and closet doors. It also allows to close portals or huts. Easy installation: The laying of the bolt lock is done without difficulty. Start by closing the door, then hold the lock horizontally. Then mark the holes on the door and door frame before attaching the sliding lock using the screws provided. The screws are depressed so that it can not be unscrewed. Easy installation - Secure your doors, gates, sheds, warehouses, cupboards, cabinets, safe, opening and closing with customizable 4-digit code Applications - Offer a keyless comfort in the form of a traditional barrel bolt. It's a flexible solution to secure hardware, tools, livestock, very popular in garden shelters, portals, cupboards and any application where a barrel lock or a groove would be used. Instructions : To change the code: 1. From the factory, the code is set to 000. 2. To change the code, turn the setting SW1, "TO". 3. While changing the code as you wish. 4. Return the SW1 adjustable to the original location to complete the setting.