There are more than 10 styles of Xiaomi smart door locks currently on sale, if you don't know much about smart door locks, you will be very confused and don't know how to choose? So I will share with you in detail how to choose a Xiaomi smart door lock? Smart door locks are divided into fully automatic and semi-automatic, add down let's first introduce the difference between semi-automatic and fully automatic smart door locks, so that you can understand and buy. 
The semi-automatic smart lock has good stability and a relatively low failure rate; Good compatibility, suitable for most security doors; **Closer to the people. Close the door manually, and when re-locking, you must lift the handle or twist the anti-lock knob to reverse the lock.
The fully automatic smart lock frees your hands, and the intelligent use experience is full; The door is automatically locked when closed, which is convenient and safer; Relatively high. There are many models of Xiaomi smart door locks, and I list the comparison of model parameters in addition to the handle pressing down model (semi-automatic), fully automatic, and face recognition models. 
It is made of aluminum laminated full plate, stainless steel deadbolt, brass lock cylinder, wear-resistant coating, fingerprint cover material, which supports door concealment, multiple errors, and door lock is damaged to remind that it is powered by 4 No. 5 batteries and Type-C emergency power supply. The disadvantage is that it does not support face recognition, there is no camera, it does not support automatic locking, and it needs to lift the handle and rotate it mechanically. Xiaomi smart door lock entry model, suitable for limited budget, do not want more functions, more recommended Xiaomi smart door lock E10 is made of aluminum alloy, the front panel is made of IML process PC material, and the rear panel is pure PC material, which is powered by 8 No. 5 batteries.
Unlocking method: fingerprint, password, mobile phone Bluetooth, NFC, mechanical key, temporary password are mechanical anti-lock methods and have child lock function, not automatic anti-lock.
Compared with E10, it has been upgraded to support WiFi connection to the network. You can check the door lock door in real time on the Mi Home app, open the door indoors after leaving home, unlock the door by trial and error for many times, cover the door falsely, pry the outer panel, and coerce fingerprint unlocking.
It is very suitable for the kind of people who go out with the door closed and always feel that the door is not closed.
Unlocking methods: fingerprint, password, temporary password, Bluetooth, key, honekithfc
Support double authentication, you have to have 2 smart unlocking methods to pass the verification before you can open the door, you can freely combine settings. With a 161° camera, you can keep track of the status in front of your home when connected to Wi-Fi.
Support wifi connection to the network. You can check the door lock door in real time on the Mi Home app, open the door indoors after leaving home, unlock the door by trial and error for many times, cover the door falsely, pry the outer panel, and coerce fingerprint unlocking.
The Xiaomi Smart Door Lock Pro has more camera functions than the E20 WiFi version.
It is made of aluminum alloy exterior panel and brass lock cylinder.
Unlocking method: fingerprint, password, mobile phone Bluetooth, NFC, machine city key, temporary password, emergency key, Homekit 8 No. 5 batteries (4 power supply, 4 spare) + 5000mAh lithium battery power supply.
Compared with Xiaomi's smart door lockPro, it has been upgraded, and it supports automatic locking when the door is closed, and the inductive doorbell can ring automatically when someone comes. The camera has been upgraded to 171° for a wider angle.
At the same time, it also supports wifi connection to the network.
It is made of aluminum-bonded full exterior panel, brass lock cylinder, and glass fingerprint cover.
It supports automatic locking when closing the door, and pushing and twisting the reverse lock.
8 No. 5 batteries and 5000mAh lithium battery power supply mode180° ultra-wide-angle camera, support face unlocking, the inner door lock is embedded in the high-definition display, you can view the dynamics in front of the door in real time, and you can also view the situation in front of the door in real time with Xiaomi TV, Xiaomi mobile phone, and Xiaomi smart screen.
Unlocking method: face, password, fingerprint, mobile phone Bluetooth, NFC, mechanical key, temporary password, emergency knob, does not support double authentication unlocking compared to Xiaomi automatic smart door lock Pro door lock with a screen, the budget is sufficient, this Xiaomi smart door lock M20Pro is highly recommended