1. Log in to your smart lock's TTlock/Tuya app or access the lock's settings through a control panel or keypad.
2. Locate the Change Code option.
3. Enter your current code and create a new code.
4. Confirm the change.
5. Test the new code.

1. Prepare tools: usually need screwdrivers, drills, measuring tools, etc.
2. Remove the old lock: If there is an old lock on the door, remove it and clean the door surface.
3. Install the lock body: According to the manual of the smart lock, install the lock body into the door to ensure that the lock body is stable.
4. Install the front panel: Align the front panel of the smart lock with the lock body, insert the connecting bolts, and tighten the screws.
5. Install the rear panel: Align the rear panel with the front panel, insert the connecting bolts, and tighten the screws.
6. Connect the line: Depending on the type of smart lock, you may need to connect the power cord, data cable, etc.
7. Install the battery: If the smart lock is powered by a battery, install the battery in the corresponding position.
8. Debug test: After the installation is completed, test to ensure that the various functions of the smart lock are normal, such as unlocking, locking, fingerprint recognition, etc.
9. Set the password and fingerprint: Set the password and fingerprint information of the smart lock according to the instructions in the manual.
10. Complete the installation: After confirming that the smart lock is working properly, the installation is complete.

1. In case of electronic system failure, such as battery exhaustion, circuit failure, etc., the mechanical key can be used as an emergency unlocking method.
2. Meet the requirements of certain regulations or safety standards to ensure that the lock can be unlocked in special circumstances.

1. Dependence on electricity: If there is a power outage or the battery is exhausted, it may cause the lock to be unable to open, leaving people locked out.
2. Risk of technical failure: There may be technical problems in software or hardware, affecting normal use.
3. Security concerns: There may be hacker attacks or electronic vulnerabilities, leading to security risks.
4. High cost: Compared with traditional locks, the cost of purchasing and installing smart locks is usually higher.
5. Not very friendly to the elderly or those who are not familiar with technology: The operation may be more complicated and may be difficult for people who are not good at using new technologies.

Locstar smart door lock is a smart lock super factory from China, with more than 26 years of door lock R&D experience. Adopting China's most advanced TTlock/Tuya solution, deploying local server data that is completely private to any third party. In response to several common problems that most customers care about, we have upgraded the battery capacity to ensure longer battery life, and the lock has a high-volume (adjustable in the app) voice broadcast to guide the elderly to operate, and the APP interface can also guide users to operate the door lock. In comparison, we save the cost of middlemen, and the package goes directly from the smart lock factory to the user's hands, eliminating the price difference.

• Lcostar smart door locks have many styles. In order to meet the needs of the majority of users, the conventional models of our door locks are used for common wooden doors and various metal iron doors.
• Of course, there are some special scenes, such as the balcony ultra-narrow aluminum alloy glass door (sliding door) can also install our door lock LS-C81, and the office full glass door can use our LS-C83a.
• We provide installation drawings and installation videos for the majority of users, so there is no need to cause unnecessary troubles for hiring a locksmith to install.