Password setting: The original password for this refrigerator lock is 0000 (changing the password is not recommended, as many people forget the new password). Changing the password is very simple; just place the password \"0000\" in the hole on the right, insert the device, and start resetting the password. Once the password is set, release the device. Child safety lock: This adhesive combination lock prevents children from pinching their fingers when opening the refrigerator; prevents children from eating food prohibited by parents; and provides protection even if a child accidentally locks themselves in the refrigerator. No tools or drilling required - This adhesive refrigerator lock is very easy to install; just peel off the sticker and attach it to the refrigerator. Clean and dry the refrigerator surface before use. The sticker is durable and will not damage the refrigerator surface; use it with confidence. Multifunctional combination lock: Not only suitable for refrigerators, but also for cabinets, convection ovens, air fryers, toilets, windows, drawers, wardrobes, washing machines, etc. The safety lock can protect children and pets.