1. Whether the power is enough or buy fake batteries, because the lack of power will also cause the lock to be opened sometimes and sometimes not.
2. The long-term use of fingerprint door lock on sales causes excessive loss of the motherboard, resulting in battery leakage and inability to open the lock. The solution is to find the brand's after-sales service department to replace the motherboard. Generally, it will be replaced free of charge during the warranty period, and the normal fingerprint door lock on sales warranty period is about 2 years.
3. The motor does not work; how do ordinary consumers see if the motor is damaged, it is very simple, as long as we enter an opening method, we can hear a "squeak" in the lock, indicating that the motor is not damaged, and if it cannot be heard, it means that the motor is broken. needs to be replaced.

4. Damage to the motherboard will cause excessive battery consumption, and the password and card cannot be opened (black screen), but the fingerprint can be opened.
5. The intelligent fingerprint door lock on sales body is damaged; we try to replace the heavier and thicker materials when replacing the intelligent lock, especially the thickness of the inner material of the lock body.
6. Customers with low fingerprint recognition rate; generally elderly people, with shallow fingerprint heads (flat and dry), and fingerprints are often ground during work; the fingerprint recognition of the above types of customers will sometimes open and sometimes fail to open, it is recommended to use a card or Password is on.