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November 13, 2020 by Maura

How to choose the smart door lock

There is no perfect smart lock, but there must be a smart lock that is best for you. This article is devoted to comparing the points you need to pay attention to in order to help you know which Smart Lock is best for you.

1. Look at the lock cylinder core

It is best to choose a C-level lock core. Lock core is the most core safety component of locks, but also the most important feature to tell whether the smart door Lock is secure or not: Lock Core General separated as Lock Core A, B, C, three, C is the best. According to the published data, when picking the lock, it takes 270 minutes for a class C lock, 5 minutes for a Class B, and 1 minute for a Class A.

Thieves will not spend a long time picking the lock, they need to be quick. so, Class C(or level C) is the best, Class B is also ok.


2. Fingerprint identification module (semiconductor fingerprint identification module)


The fingerprint identification module should choose the semiconductor fingerprint identification module.

The fingerprint is considered the second core security component of Smart Door Lock by the module, the fingerprint identification module is divided into two kinds: optical fingerprint identification and semiconductor fingerprint identification:

Optical fingerprint recognition: this kind of recognition, is through the reflection of light after the formation of the fingerprint shape recognition algorithm. The security problem is that the copied fingerprint can be used to unlock the lock.


Semiconductor fingerprint identification: it is commonly known as living body identification, in short, when the Finger Touch Fingerprint Identification Module, fingerprint module identification through capacitance, inductance, temperature, the pressure of the original multi-dimensional fingerprint identification. The best thing about this is you can’t use a fake fingerprint.

One of the disadvantages of semiconductor fingerprint identification is that it is easy to wear and tear when worn over a long period of time. This problem does not need to worry about when buying a fingerprint lock. First, safety is of the utmost importance. Second, smart lock makers typically will build something to prevent or reduce the wear and tear of their semiconductor fingerprint recognition modules, such as toughened glass.

3. Anti-peep holes unlock

If there is a peep hole on the door, be sure to choose a lock to prevent the peepholes unlock

The principle of peepholes unlock is to remove the peep holes unlock, and then put tools into the hole, such as the hook, use the hook to press the door handle down, and then they can easily open the door from the inside. Here’s how thieves unlock:


Currently, there are two designs for peepholes unlock Protection:

A. Mechanical Press:

That is, there is a button on the safety handle of the door, which needs to be pressed at the same time as the button and the door handle to unlock the door. Pressing the door handle alone cannot unlock the door.

B. No traditional door handle:

Peepholes unlock the door needs a force point, this is door lock doesn’t have a traditional handle, then not to the force point for them to turn the handle. This design is usually found in fully automatic door locks. Like this door lock below:


4. Hijack password or fingerprint:

It would be nice if the door lock has this function.

Normal door lock does not have this function, it is not a basic requirement, however, it is best to have this function. This function may not be used in a lifetime, but once used, it is life-saving. The use scenario is to use a pre-set fingerprint/code to unlock when threatened and to send a silent alarm message to the other family members.


5. Other security features:

A. Random pin unlock:

This feature is usually included in all door locks.

The main function is to effectively prevent people from trying to read passwords, and thieves from trying to guess the home password through the fingerprint marks and wear on the password keys, the user can enter a lot of numbers at will, as long as the serial number in the middle is correct, the lock will open.

B. Tesla coil:


Basic function of general intelligent door lock.

The principle is through the electromagnetic interference chip let the smart door locking machine short-circuit and then force restart or break the lock.

6. Battery and endurance

Batteries are divided into dry and lithium batteries, but there is one detail that needs attention. img

Dry cells are divided into:

A battery pack of 4 # 5 batteries (generally sustainable for 1 year).

Two sets of 4 No. 5 batteries (8 batteries, 4 sets of 1 set, alternating power supply).

An eight-cell battery pack.

Here, We suggests, don’t pick a lock on a double set of four No. 5 batteries: There’s a risk of battery leakage. The working mechanism of this kind of door lock is when one group of batteries is lower power, it will switch to the next group, while the original group of no power batteries is still inside the lock, no power batteries are placed inside the lock for a long time are easy to leak.

How do you tell if your lock is this kind of smart lock? You can check the smart-lock parameters. When written, it’s powered by an 8pcs * No. 5battery, then this type is ok. It is not good when it is written, it’s powered by 4pcs* No. 5 batteries, which can be expanded to eight.

If you’ve already bought 4pcs * #5 batteries * 2, I recommended that you only power 4pcs, and don’t extend.

This article is from the consumer point of view to explain the intelligent lock, do a simple introduction, there is no discussion of the complex salt spray test and other door lock quality test. If you are interested in this kind of complex experiment, we can collect more information and make more introduction.

Wechat: maura2486