High grade zinc alloy fire-rated keypad with solenoid lock and 2 override keys, providing strong physical protection against forced entry and featuring a 3-error code locking mode. Round shape, 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 indicating operational status. To replace the battery, remove the keypad face by turning the tab counterclockwise. Digital keypad security solenoid lock is suitable for home safes, lockboxes, hotel safes, cabinets, and slots. This product should only be installed by qualified personnel. If you are not a trained safe technician or locksmith, do not attempt installation. For questions or support, directly. Color: As shown Material: Metal Package Contents: 1 x Lock replacement Note: Light reflection and display settings may cause slight color variation between the image and the actual item. Measurement tolerance: +/- 1-3 cm.