When many people travel, the most impressive thing is not only the local beauty, but also the lock of the hotel. Compared with ordinary door locks installed by home users, smart door locks installed in hotels give people a very convenient and safe feeling. Of course, in addition to hotels, many home users in first-and second-tier cities have begun to upgrade their home locks and replace them with smart locks with higher safety factors.

　　However, at present, consumers’ understanding of smart locks is limited to understanding the functions of password unlocking and fingerprint unlocking. When purchasing similar products, the models recommended or used by stars play an important guiding role. Many friends are even more worried about buying smart locks. Is smart locks really smart? How does it usually work? When it is out of power, how can we charge it and open the door? Today, we will talk about these issues, and interested friends may wish to have a look.

　　First, the working principle of intelligent lock

　　Only by knowing the working principle of smart lock can users better understand it. The basic structure of the intelligent lock is to use the motor to drive the mechanical lock core to complete the original manual rotation of the key. Intelligent lock is a combination of traditional door lock, electronic information technology, biometrics technology and Internet of Things technology. It integrates many scientific and technological achievements of human society, and has built-in embedded processor and intelligent monitoring system, which greatly improves the efficiency of door opening and closing, and at the same time improves the security alarm of door lock.

　　When the traditional door lock opens the door, it needs to take out the key, insert the key, rotate it for 3 times, pull out the key and open the door, a total of 7 actions; The smart lock only needs to identify the fingerprint and open the door, a total of two actions. When the traditional door lock is closed, it needs to close the door, take out the key, insert the key, rotate it three times and pull out the key, a total of seven actions; The smart lock has 1-2 actions, closing the door or closing the door and lifting the lock. The intelligent lock reduces the number of actions to open the door by five, and the number of actions to close the door by five to six, which makes a great leap in convenience.

　　Second, how to open the door when the smart lock is dead?

　　1. USB emergency power supply

　　When the intelligent door lock is working, it needs electricity to start the door opening. If one day, it reminds you to change the battery or charge it, you are too busy to ignore it. We are locked out after work, so we can use USB to charge the door lock. Nowadays, many people will carry USB and charging treasure with them, which is a good habit. Let’s connect the USB link cable to the USB power supply hole of the smart door lock, and then connect the other end to the charging treasure, so as to provide emergency power supply for the door lock. At that time, you can enter your fingerprint or password and open the door.

　　Under normal circumstances, the smart door will generate a low-voltage alarm prompt. If there is a "beep, beep, beep" alarm prompt, it is reminding the user that the power of the door lock is insufficient and the door lock battery needs to be replaced in time. To install the battery, you need to know the location of the battery, generally in the following locations: the rear panel, the lock body, and centralized power supply. Most smart door locks have five pairs of batteries built in. According to the number of times a family of three opens and closes the door, there is no problem for about one year. If there is a power shortage alarm prompt, everyone needs to replace the battery or charge it in time.

　　2, mechanical key to open the door

　　Smart door locks support a variety of unlocking methods, among which the key is their standard. If you encounter the situation that the smart lock is out of power and can’t open the door, you need to open the door mechanically through the key. The keyhole of the smart door lock is either in the lower middle part of the front panel or at the bottom of the front panel. When you use the smart lock, remember to put the emergency key in the office, the car or the neighbors with good relationships to prevent it from being unique.

　　3. Find an unlocking master to unlock the lock.

　　Smart door locks are safer than ordinary door locks. One of the reasons is that most of them use C-class lock cores. This level of lock core is difficult to be unlocked by technology, but it doesn’t mean that it can’t be unlocked by technology. It’s just more troublesome and you need to spend extra money.

　　At present, the intelligence of intelligent door lock lies not only in its convenient unlocking mode, but also in its security function. At present, many smart locks have alarm function. When the door lock is pried, the password is continuously wrong, and the fingerprint is continuously recognized incorrectly, the door lock will directly give a sharp alarm sound to remind the family members of the thief’s "presence" in time. Some smart locks with networking function will also push messages to the mobile phone, so that the householders outside can deal with it in time and avoid property losses. Smart door locks are easy to use, but if you have a purchase plan, it is recommended that you start with the products of big brands.