Smart door locks are the vanguard of the smart home market, and manufacturers from all walks of life are eager to take a share in this market. However, due to the lack of a unified set of standards and specifications, my country's smart door lock market has problems such as disordered categories, backward designs, inflated prices, and incorrect versions. In the 2018 Yongkang Door Fair that just ended, low prices, plagiarism in appearance, and uneven functional quality of iron padlock were also very significant. As consumers, we always walk on thin ice in our choices, and don't know how to choose high-quality and safe products.

Therefore, consumers are faced with a wide variety of locks on the market, and the quality is not known. If you want to buy locks with good quality and complete after-sales, I am afraid it is a bit difficult, but as long as we keep our eyes open and have the ability to distinguish the quality of the locks, we are not afraid of buying inferior products. Let's take everyone to learn these skills.

1. Look at the surface

The high-quality locks have a clear appearance, and the surface is smooth and not rough. Purchase skills: Touch the surface of the lock and feel whether the surface is smooth, so as to judge the quality of the coating of the lock; check whether the lock head, lock body, bolt, handle and cover plate and other parts and related accessories are complete; check the plating parts , Whether the surface color of the painted parts is bright and uniform, whether there are signs of rust, oxidation and damage.

Some advanced technology can extend the service life of the lock and increase the strength of the lock. For example, pay attention to whether there are defects such as open welding, unwelded, missing welding, etc., and check whether all joints such as the door leaf and the door frame are dense, whether the gap is uniform, whether the opening is flexible, and whether the paint plating is uniform, firm, and smooth.

2. Listen to the sound

The lock is made of copper-plated, the sound is dull when it is opened, while the sound of copper-plated or stainless steel locks is more crisp. Purchase skill: Use two or more products to check and compare whether they are firm and reliable.

Check whether the lock is flexible to open. Check the insurance structure of the product to see if it is smooth and unimpeded. It is recommended to try at least 3 times for each lock.

3. Weigh the portion

If the lock is light, the anti-theft performance and service life of the lock are not ideal. Purchase skill: Measure the lock core part, the good quality lock core is heavier, on the contrary, the poor quality is very light. Weigh the entire lock. Locks made of high-quality materials such as pure copper feel heavier, while locks made of copper-plated materials are relatively lighter.

The main parts of the lock body (the slanting tongue, the main tongue, the safety tongue, and the main internal connections and the outer shell of the lock) are high-quality products. These main materials are generally made of 304 stainless steel, which has extremely high temperature resistance and corrosion resistance. At the same time, it can effectively prevent violent actions such as drilling and impact, which can safely protect the safety of the home.

4. Lock core

The core of the anti-theft lock is the core of the anti-theft lock. All anti-theft locks have only one core, which is like the human heart, which is vital and indispensable to the entire human body. As soon as the lock cylinder is opened, all the lock points are opened, and no matter how many lock points are used, it is useless.

Most people only look at the shape of a lock when buying a lock. The anti-theft performance is the super B-class anti-theft lock cylinder, which is a super B-class lock cylinder that interacts with a single row of ball marbles, a slider pin, a suspended pin and a double roller. , Anti-theft with key, anti-pry, anti-drilling and other advantages. But no matter which kind of smart anti-theft lock you buy, the European-style lock cylinder is used instead of the copper lock cylinder. We can also distinguish the security level obtained from the key, because the more the number of teeth of the key, or the more special, the lower the mutual opening rate of the lock and the better the anti-theft performance. Choose a lock with a very different key tooth depth. The tooth shape is too flat, smooth and shallow, the mutual opening rate is high, and the anti-theft performance is not good enough.

5. Spring

The quality of the spring also determines the service life of the lock. If the spring quality of the lock is not good, the handle is easy to sag, and the life of the lock will be greatly shortened. Purchase skills: Try the toughness of the inner spring of the lock. A good spring has a very soft feel and moderate hardness.

6. Abnormal alarm function

If the lock is not locked properly, the bad guys can take advantage of it, and the owner's property may be lost. This is a realistic problem. Therefore, the smart lock with no abnormal alarm function should be a sign of its quality. The smart lock with abnormal alarm function, generally within 3 seconds of the abnormal situation of the lock, the lock will automatically sound an alarm to attract the attention of the owner and re-lock the door.

Conclusion: The content introduced above is a way to distinguish the quality of long shackle padlock. In addition to these basic aspects, we also need to look at the manufacturer’s certificate, production license, etc., because the smart lock manufacturers with these certificates must be regular manufacturers, and the products they produce must have a certain quality assurance.