Product FAQ

1、Does the Lumi Smart Door Lock D300 support fingerprint unlocking for children and the elderly?

Yes, but because children under seven have immature fingerprints, the success rate of unlocking can be reduced due to wear and tear on the fingerprints of older people. This is an objective challenge inherent in the fingerprint recognition industry, stemming from biometrics. The Lumi Smart Door Lock D300 improves security and the success rate of fingerprint unlocking for children and the elderly by optimizing its sensor and fingerprint algorithm. However, it is still recommended that elderly people and children use a password or NFC device for more convenience.

2、Is the HomeKit unlocking feature on the Lumi Smart Door Lock D300 secure?

HomeKit uses end-to-end encrypted transmission to ensure that your HomeKit devices are not exposed to the cloud and easily attacked by hackers. Furthermore, Apple does not collect HomeKit accessory data, which not only protects user privacy but also makes it safer and more convenient to use.

4、Can the Lumi Smart Door Lock D300 still be unlocked after locking the door from inside?

The door can be unlocked using a phone that has added the lock through the Xiaomi Mi Home app, the administrator’s fingerprint, and the administrator’s password.

5、What should I do if my Lumi Smart Door Lock D300 is out of battery?

If your Lumi Smart Door Lock D300 is out of battery, you can use a power bank to unlock it through the Lumi Smart Door Lock D300’s emergency charging port. The emergency charging port is a Type-C connector located at the bottom of the lock’s exterior panel. Using a power bank and a Type-C cable, you can power the lock instantly, without compromising recognition speed or security.

6、How do I connect the Lumi Smart Door Lock D300 to a Bluetooth gateway?

As long as the Lumi Smart Door Lock D300 is near a Bluetooth gateway device registered with your Xiaomi account, the Lumi Smart Door Lock D300 will automatically connect without any additional configuration.

7、How does the Lumi Smart Door Lock D300 connect to the internet? Can it integrate with other smart devices?

The Lumi Smart Door Lock D300 has a built-in Bluetooth module and can be connected to the internet through a device with Bluetooth gateway functionality. Once connected, it can be intelligently linked with other devices connected to the Xiaomi Mi Home app. The Lumi Smart Door Lock D300 supports doorbell and one-touch arming functions, creating a more convenient whole-home smart experience.

8、Can the Lumi Smart Door Lock D300 connect to multiple phones simultaneously?

The Lumi Smart Door Lock D300 uses the Bluetooth 5.0 protocol, which only supports one-to-one connections. Therefore, the Lumi Smart Door Lock D300 can only be linked to one phone at a time for operations. The user who linked the phone has the highest-level administrator privileges.