Note: This product is a fixed, non-disassemblable combination set. Please remove all older parts and adopt all of our new parts to ensure proper operation. High Quality Case Lock and Keypad - Solenoid lock with a fire-resistant, corrosion-resistant high-grade zinc alloy housing and keypad - Offers three error-code lockout modes for added security - Includes two override keys for emergencies Standard Size - 95 mm (3.74 in) round front panel - Weight: 6.35 oz - Please check compatibility with your safe box before purchase - Product instructions video available for reference Easy Use and Install - Programmable 3- to 8-digit digital code - Three different color indicator lights show current status - To change the battery, press the tab counterclockwise to remove the keypad face Applications - Suitable for digital keypad security solenoid lock replacements in home safes and lock boxes, handgun safes, hotel safes, cabinet safes, and recessed safes Service - If you are not a safe technician or professional locksmith, please do not attempt installation - If you encounter any issues, contact us for one-on-one support to help resolve the problem