A safe door lock can support a home. Nowadays, there are many types of anti-theft door locks on the market, and the quality varies. In the process of selecting door locks, it is often difficult to choose. There are also levels of anti-theft door locks, which can basically be divided into Class A, Class B, Class C, and the security level is also from low to high. We can distinguish the level of anti-theft door locks from the top. Let's take a look at the levels of anti-theft door locks and how to choose anti-theft door locks.
1. What are the levels of anti-theft door locks?
1. Door lock level A.
Currently, the keys for level A anti-theft locks on the market mainly have one-word keys and cross keys. The internal structure of the Grade A lock cylinder is very simple, limited to the changes of pins, and the pin slots are few and shallow. Within 1 minute of the anti-technical opening time, the mutual opening rate is extremely high. The marble structure is a single row of marbles or a cross lock.
2. Door lock level B.
The key to a Level B lock is a flat key with a double row of pin slots. The key is different from the Level A lock in that there is a row of curved and irregular lines on the key surface. There are three main types of lock cylinders: computer double-row lock cylinder, double-row crescent lock cylinder, and double-sided blade lock cylinder. The anti-technical opening time is within 5 minutes, and the mutual opening rate is high. With a strong twisting tool, the lock cylinder can be opened within 1 minute.
Generally speaking, most of the uniformly configured lock cylinders in residential areas are A-level or B-level anti-theft lock cylinders with low anti-theft technology. According to national standards, the opening time of Class A lock cylinder protection technology is 1 minute, and the opening time of Class B lock cylinder protection technology is 5 minutes. In just a few minutes, there is no way to compete with the highly intelligent lock-opening tools used by thieves today. When the common A-class anti-theft lock cylinder is locked, the thief can open it in just a few seconds using tinfoil and tools.
3. The door lock level C
key shape is a double-sided blade with an inner milled groove or an outer milled groove key. The lock cylinder type is an all-stainless steel double-sided column and a 48-blade lock cylinder. It has been tested by the Ministry of Public Security that it cannot be opened technically after 800 minutes. The regional mutual opening rate is zero (one in 35 million). 48-blade plus double-type side post locking; if a strong twisting tool is used to open the lock cylinder, the interior of the lock cylinder will be damaged and the lock will be idling and locked, making it impossible to open. Because it is difficult to open and has the highest anti-theft coefficient, it is recommended to use super C-level locks for home anti-theft.
2. How to choose anti-theft door locks
The first trick: buy a lock and look at the "teeth" of the key. The more teeth, the deeper the teeth, the more complex the arrangement, the more difficult it is to open, and the better the anti-theft performance.
The second trick: when choosing a lock, weigh it in pounds, first compare the weight and secondly look at the lock core. The heavier the weight, the better the quality of the lock cylinder, and the more beads in the lock cylinder, the better the anti-theft function.
The third tip: When choosing a lock core, look at the color, and compare the color with the workmanship. Good quality lock cylinders are electroplated, with a smooth surface and bright color. Among them, the dark yellow color is the copper core, which is relatively strong and has good anti-theft performance. The lock core is dim in color, and the gray and bubble color is zinc alloy, which has average anti-theft performance.
The fourth trick: The key is rotated and inserted into the lock cylinder. If the key is stuck, the anti-theft performance is poor. After the key is halfway inserted, use 5 to 7 points of force to rotate clockwise or counterclockwise and continue to press the key into the lock. A stuck key indicates that the lock cylinder is anti-theft. The performance is poor. If the lock cylinder is successfully inserted in the half-rotation state, the anti-theft effect is good.
When buying a lock, look at the "teeth" of the key. The more teeth, the deeper the teeth, the more complex the arrangement, the more difficult it is to open, and the better the anti-theft performance. Good quality lock cylinders are electroplated, with a smooth surface and bright color. Among them, the dark yellow color is the copper core, which is relatively strong and has good anti-theft performance. The lock core is dim in color, and the gray and bubble color is zinc alloy, which has average anti-theft performance.
What are the levels of anti-theft door locks? This is the introduction on how to choose anti-theft door locks. I hope it will be helpful to everyone.