Have you ever used it? How about the smart door lock in Jiu Ge?

When many people choose smart locks, it is easy to go into the misunderstanding of only looking at the face value, or be fascinated by various functions. In fact, the core of lock is mechanical lock, and it is definitely necessary to choose a brand with excellent mechanical lock technology. The nine-song smart lock mentioned by the subject is good. They use an intelligent anti-interference lock body, which is still good to use.