How does the smart door lock work? How to charge the door when there is no power?

First of all, there are several types of smart door locks. Here's how they work:

1, inductive lock:

Induction lock is the most widely used intelligent door lock, which is used in most hotels where we live. The sensor card opens the door through a microcomputer chip. There are two kinds of induction cards, one is magnetic stripe card and ic card, which are unlocked by the matching degree of digital information and characters; The other is TM card and RF card. The former can read and write data through instant touch, while the latter uses radio signals to identify information.

2. Password lock:

The password lock is unlocked by a specific combination of numbers, and the chip or circuit is controlled by inputting the corresponding numbers.

3. Biometric lock:

The unlocking method of biological lock can be unlocked by fingerprint, face, iris, etc. With the identification information of fingerprint identification system or iris identification system.

Second, how to charge the door when there is no power?

1. The smart door lock at home is dead. You can use the charging treasure to supplement the power through the USB data cable (emergency). When the power is sufficient, you can open the door. Of course, this is in the case that the user carries the charging treasure with him.

2. Generally, when the voltage of smart door is low, it will be issued? Tick-tock? The sound reminds the user that the battery of the door lock needs to be replaced because of insufficient power. The position of the battery is generally on the lock body or back plate, and most smart locks need five pairs of batteries at a time.

3. In order to ensure the user's use, the smart door lock still retains the traditional unlocking method. When the door lock can't be opened without electricity and there is no charging treasure, you can open the door with a key, and the keyhole is generally located in the middle and lower part of the front panel.

4. If there are continuous password input errors and the fingerprint identification fails and you forget to bring your key, it is difficult to open the door with brute force because the smart door lock is stronger than the ordinary door lock. At this time, you can only ask the locksmith to unlock the lock with technology. On the one hand, it can effectively avoid the patronage of thieves.