As for the smart door lock, I think it is one of the products that can improve the happiness of life. It can let you forget the existence of the key. Each time, you can unlock the door with your fingerprint, which is very similar to the way we usually unlock the phone with our fingerprint. It can be said that it is another product that can't be returned once it is used Love to play computer games Recently, we also received the Mijia smart door lock. The crowdfunding price was 999 yuan before, but now the official price is 1299 yuan. The cost performance ratio is quite high, so what's its actual experience? Come and have a look.

First, let's have a brief look at a wave of accessories.

All accessories of the packing box: front panel, rear panel, lock body, intelligent lock cylinder, emergency key × 2, door buckle plate, door buckle box, accessories package, No. 5 battery × 8, installation hole drawing, instructions.

The design of the rear panel and front panel, and the front and rear panels are still very "Mijia", very simple, and the color matching is mainly black. However, this mirror panel is easy to be stained with fingerprints, and is not very friendly to obsessive-compulsive patients. The door handle and side frame are made of metal frosted material, which is not wrong in texture, and the rotation damping of the door handle is OK.

Take a look at the main parts of the front panel. From top to bottom, they are: password input area and function keys, NFC identification area, fingerprint identification area, and emergency key hole cover.

The fingerprint identification area on the front panel is made of sapphire with Mohs hardness of 9. The general sandstone and knife can not be scratched. The area of the identification area is OK, and the groove design is also made. It is OK to press the handle blindly to unlock. The basic operation logic is to hold the handle in a normal position, identify the thumb fingerprint, press the handle down to open the door directly, and lift the handle up to lock it. The experience is very easy, In addition, it is worth mentioning that the algorithm of 3D capacitive fingerprint recognition for Mijia intelligent door lock is provided by Swedish fingerprint algorithm company PB.

There are also speakers at the bottom and an emergency power supply port (Micro USB). When the door lock is not powered, you can use the power bank to connect the external power supply, but this situation should be rare. This port can only charge, and cannot transmit data. So it is basically impossible to connect the data cable to the black door lock.

Look at the back panel. The door handle on the back panel is still made of metal frosted material. The difference is that the back panel of the fingerprint identification area on the front panel becomes a button. This button is an anti cat's eye button. You must press and hold the button and then press the handle to unlock. The cat's eye unlocking tool cannot unlock.

Below the handle is the anti lock knob. This anti lock knob is specially designed. Yes, it needs to be pressed down and then rotated to lock. The official said to prevent the bear child from locking by mistake. However, I think only the child who cannot open the door can be prevented. The product manager of Mijia Door Lock may underestimate the "learning ability" of the bear child. The operation logic of the handle on the rear panel is: press and hold the button, press the handle down to unlock, and lift the handle up to lock.

The back panel can be disassembled. I thought it could be simply opened with my fingernails. Later, I found a mistake. Finally, I had to use a slotted screwdriver to pry it open. When I opened it, I could see the battery compartment. A total of 8 No. 5 batteries can be installed, but in fact, only 4 batteries are needed for normal power supply. The other four batteries are actually used as standby. The first four batteries are automatically replaced after use, Officially, the service life of the door lock is 18 months (8 No. 5 batteries). There are setting keys, bluetooth pairing keys, unlocking prompt tone mute keys, and reset holes above the battery compartment (card pins are included in the manual).

Lock body

Smart lock cylinder × 1, emergency key × 2, No. 5 battery × 8, accessory package × 1

According to the official, the smart door lock of Mijia adopts a true plug-in C-level lock cylinder. Even if the front panel is damaged or removed, it still faces a complete door with a C-level lock cylinder installed. Moreover, the lock cylinder also has an insertion detection function. If an object is inserted for many times or for a long time and the lock fails to be unlocked successfully, the door lock will alarm and the App will push it.

The installation method of Mijia's smart door lock is also very "Internet". Scan the QR code on the instruction manual, and then upload the photo of the original door lock. The installation master authorized by Xiaomi will call you to make an appointment to install the door lock.

In addition to fingerprint unlocking, Mijia smart door locks also have password unlocking, NFC unlocking, Bluetooth unlocking, and emergency key unlocking. However, fingerprint unlocking is mostly used in ordinary times. And I think that with so many unlocking methods, does it mean that there are more ways to crack? However, as a consumer, it is better to have something than nothing. It is uncertain that there will be other ways to unlock when the fingerprint is broken.

As a product of Mijia, the biggest feature must be the connection with Mijia App, which can be used for user management, such as adding/deleting users, changing user permissions, etc., as well as adding/deleting fingerprints, passwords, Xiaomi mobile phone NFC, temporary passwords. Mijia has a comprehensive consideration in this regard.

In general, Mijia Smart Lock has done a good job in the actual unlocking and opening experience and security. The biggest advantage is that it can connect Mijia App. If there are other Mijia devices in the home, it can even be linked together to feel the charm of smart home. After using the smart door lock, it can really greatly improve the sense of happiness in life, It's really a good feeling that we don't need keys to go out and go home. Technology is really slowly changing our way of life.

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