【Power-Free Design】 - This Mechanical Combination Lock offers the ultimate convenience with its power-free operation. You will never need to worry about batteries dying or power failures again, making it an ideal choice for sliding doors in kitchens, offices, or balconies. Its mechanical design ensures reliable functionality, providing you consistent access whenever you need it. 【Sturdy Construction】 - Crafted from high-quality zinc alloy, this lock is reinforced with chrome plating to resist wear and tear. It stands strong against severe impacts, ensuring that your security remains intact at all times. The durable construction not only enhances safety but also contributes to the lock’s aesthetic appeal, making it perfect for any setting. 【Flexible Password Options】 - The lock features a highly sensitive keypad that allows for the selection of a unique combination of 1-11 digits. You can set non-repeating passwords, offering a higher level of security. The system also allows for unlock sequences that don't require entering keys in order. This flexibility makes it easier to remember your code while still ensuring maximum protection. 【Easy Reset Function】 - In the event that a password is incorrectly entered, the lock provides a convenient reset function. Simply press the C button, re-enter your code, and regain access effortlessly. This user-friendly feature ensures that you’re never locked out for long, making it an efficient solution for everyday use. 【Versatile Application】 - This Mechanical Coded Lock is suitable for various door types, including sliding doors, interior doors, and rental properties. With a thickness compatibility range of approximately 10-60mm, it can be installed on most standard doors. Whether upgrading your home security or seeking keyless convenience, this lock is a smart choice for secure access., Weight: 2.8880556322 pounds, Manufacturer: Sonew