1. The steps to use the password lock are to open the battery cover of the indoor lock body and short press the setting button in the open state.

2. When the number keyboard backlight is on, enter the Master password and press the star key to enter the main menu selection mode.

3. After the backlight of the number key lights up, press 1, and then press the star key.

4. Enter the password key number: When the backlight of the number keyboard is on, press the required unset key number numbers 0 to 9, and then press the star key.

5. After the backlight of the number keyboard lights up, enter the new password with 4 to 12 digits.