Security level of lock cylinder
Nov 24, 2023
Common A-level lock keys: serrated keys, cross-flower keys, single-row marble keys
The key shape of a Class A lock is flat or crescent, with a row of concave key grooves on one or both sides or a cross with convex key grooves on four sides; In other words, if your door is equipped with a Class A lock, a thief can open it in less than 1 minute!
Class B lock: technical unlocking time is more than 5 minutes
The key of the Class B lock is flat and has a double row of pin slots. Compared with the Class A lock, it has an additional row of curved and irregular lines. There are three main types of lock cylinders: computer double-row lock cylinders, double-row crescent lock cylinders, and double-sided blade lock cylinders. Tested by professionals, the technical unlocking time of Class B locks is between more than 5 minutes and less than 120 minutes.
Double-row pin lock
The key shape of a Class B lock is flat or crescent, with two rows of concave key grooves or cylindrical multi-point concave key holes on one or both sides; According to relevant surveys, 90% of thieves will give up if they cannot open the door lock within one minute.
Therefore, although Class B locks are not the highest level, they are much safer than Class A locks. Class C lock: technical unlocking time is more than 270 minutes The key of the C-class lock uses a double-row, computerized, compound curved groove patented key.
Theoretically, the technical unlocking time can reach more than 270 minutes. It is the lock cylinder with the highest safety factor at present. Unless it is violently destroyed, the possibility of being stolen is very high. Small.
