High grade zinc alloy fire-rated keypad with solenoid lock and 2 override keys, providing physical protection against forced entry and featuring a 3-error code locking mode. Round 98mm (3.86 inch) faceplate; please verify dimensions to ensure compatibility with your safe before purchase. Installation: Operates with 3-8 digit programmable codes and includes three LED colors to indicate operational status. To replace the battery, remove the keypad face by turning the tab counterclockwise. This digital keypad solenoid lock is suitable for use with home safes, lockboxes, hotel safes, cabinets, and slots. If you are not a qualified safe technician or locksmith, do not attempt installation. For any questions or assistance, directly. Color: As shown Material: Metal Package Contents: 1 x lock replacement Note: The package includes only the items listed above. Other products are not included. Lighting and display settings may cause slight color variations between the image and the actual item. Measurement tolerance: +/- 1-3 cm.