How to restore the factory settings of the Xiaomi Smart Doorbell 3S?

For your reference, here are the steps to restore the factory settings of the Xiaomi Smart Doorbell 3S below:
1. Please use the removal pin to separate the Xiaomi Smart Doorbell 3S from the installation base;
2. Press and hold the reset button on the back of the doorbell until you hear the success prompt, which means that the doorbell is now successfully reset.
Note:
If the doorbell is not deleted from the original account, other accounts cannot be bound.