Experts teach you "Look at the key to know the lock"

As the New Year approaches, many people have to go out to visit relatives, return to their hometown, or go out for a trip. However, before you leave home, have you ever considered whether the lock on your home door is safe? Recently, a "9 types of key security classification map" has been transmitted on Weibo, teaching everyone to identify the security level of the lock through the key. The first shot was a shocking cross lock and key that was still serving on the doors of many people. What is even less well-known is that the keys are classified according to the level of security and are divided into three categories: A, B, and C from low to high - and our most common cross keys are actually the lowest and most insecure.

However, among the keys on this microblog example, only the cross key is listed as a proposed replacement, three are recommended for upgrade, and five are classified as security levels.

This type of lock's "ABC Security Grading" is an overwhelming number of netizens, and many people shouted: "This weekend, rush home and change locks!" So, isn't the old lock must be replaced? What is the best lock on the market today? The reporter asked the professional unlockers and the police to explain.

Cross locks and locks are more secure than old locks

In most reports, it is considered that the key to the cross key is most easily opened by a thief. However, a 110 locksmith in Nanjing, Cai Ning master thinks that it is not easy to open the cross lock on the Internet, such locks also require professional tools to open, the ordinary people are indefinite; and the first lock shown in the class B lock "One-word key" is indeed easier to open. For A-class cross locks and B-level single-row locks, Caining recommends replacing them.

But he told reporters that does not mean that the simpler the key, the worse the security of the lock. In contrast, some lock cylinders 20 years ago, even with a single-sided sawtooth key, are not the same as modern locks because of the spacing between marbles. Thieves want to unlock it more difficult because its lock cylinder design is very clever.

Some locks only for the lock cylinder on the good C-level lock core more than 200 yuan

Just from the complexity of the key, the cost of Class B locks is higher than Class A, and Class C is higher than Class B. Cai Ning said that at present, relatively good real estate in Nanjing has adopted C-level locks.

He introduced that, in addition to the proposed replacement of low-level locks, other B \ C-level locks can actually only replace the lock cylinder, while retaining the original lock of the "appearance framework", which can save some money - a lock can be anti-theft, The lock cylinder plays a decisive role.

The quality of the lock cylinder is also uneven in the market, residents should pay attention to the identification of the purchase of the lock cylinder. "First-class price first-class goods," Cai Ning said that the current cross lock core is only a dozen yuan, tens of dollars; and C-level double-row lock core set of 150 yuan, double or multiple rows of crescent locks Core set of more than 200 yuan, double-row anti-pull and three-row anti-pull lock core set of about 260 yuan.

In addition, the purchase of the lock cylinder should observe its material, a good lock cylinder is pure copper, poor quality lock cylinder containing plastic - get the weight of their hands can be identified. At present, the market is relatively high-grade stainless steel spike lock, the price is more expensive, the public can choose according to the actual situation of their own home.

â–  Special reminder -

Sleeping at night to lock the door

"Actually, most stolen people are not robbers who have mastered the superb open technology, but the residents themselves neglected." Cai Ning said.

This view of Qi Xia police Wen Xiurong expressed approval. She said that from personal experience in recent years, the so-called “technical” unlocked thieves are few, and thieves like the following are more common: using a soft face copy shell, cut it into a certain shape, you can The security door opens. However, the reason for the opening was that the occupants did not lock the door, so that the thieves used a plastic shell with a certain shape and slammed the tongue.

“Some households were stolen in the night, see the doors and windows are good, suspected thieves have used a master key. In fact, many times because the door did not lock in the inside, thieves can open with certain appliances.” Wen Xiurong said.

The door and the doorway of the lock were finished, but the security of the room was not completely locked by an iron general. Wen police officer also provided some tips -

● At the end of the year or the Spring Festival, residents who go out may wish to hang a few clothes on the balcony so that the thieves are not easy to judge whether someone is in your home.

● If you go out in the night for a short time, you may wish to light up a light in your home; you can also install an infrared burglar alarm at home.

● In addition to these, the most important thing is to close the doors and windows and timely lock the security door.

● Some old-fashioned anti-theft iron doors and wooden doors combined, even if the lock is not upscale, you can add bolts and locks, thieves see complicated procedures, they will choose to give up.