Semi-automatic intelligent locks can be roughly divided into three categories:

　　1. Basic model: no cat’s eye, no internet connection, increase or decrease of users, fingerprint password setting and unlocking can only be realized in the physical lock.

　　2. Networked models: We have our own APP, which can be networked. We can increase or decrease the number of users through the background of the APP, and set the user’s fingerprint password. Some smart locks of networked models are linked with other smart home products.

　　3. Cat’s eye model: On the basis of the basic door lock function, the cat’s eye function is added, which can not only unlock the door remotely, but also take photos every time there is a visitor or a visitor, store visitor records and unlock records, and easily manage temporary visitors and send them to users.