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Anonymous users2024-01-24Locking the door with the A key will have no consequences. Only after using the B key 360 degree rotation of the lock cylinder, the A key loses the function of opening the lock. Achieve anti-theft function.
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Anonymous users2024-01-23The A key is invalid, and the A key cannot be opened after the B key is used, and the A key is for the decorator.
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Anonymous users2024-01-22There are no other problems with locking with the decoration key, and the decoration key will be invalid after the master key is used.
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Anonymous users2024-01-21This is a trivial matter, generally speaking, 2 A keys are used for decoration, and 6 B keys are used when the decoration is completed. When 6 B keys are inserted, 2 A keys are invalid and useless. Do you understand?
No, there should be a key in addition to the A and B keys, and after the decoration is completed, use that key to poke it to open the B key, if not, then you have to use the B key to poke it down to open.
Summary. There are two principles, and the principle is as follows: >>>More
The marble room in the pit corresponding to the different depths of the A (decoration key) and B key has a special structure and is equipped with a 1mm steel ball between the upper and lower marbles. When the A key is used, the height of the lower marble in the marble chamber plus the height of the small steel ball is just flush with the lock cylinder, so the lock cylinder can be unlocked by twisting the lock cylinder with the A key; When using the B key, just the small steel ball can be pushed out of the lock cylinder, that is to say, the lower bead and the lock cylinder are flush at this time, so the B key can also be twisted to open the lock cylinder (this principle is the same as the mother and son key system), but when the lock cylinder rotates at a certain angle, the small steel ball will be affected by the action of the spring spring, and fall into the blind hole that is cleverly designed on the lock cylinder in advance (this is the difference with the key system), some people call this small blind hole a trap, very appropriate. The diameter of this blind hole is larger than the small steel ball, but smaller than the diameter of the marble, otherwise the marble will fall and the lock cylinder will be stuck and cannot be unlocked. >>>More
Hello! We're happy to answer for you!
The AB key of the anti-theft door can still be opened after the B key is used, which is not normal. >>>More
No, once the C key is inserted, the A key can no longer be used, and only the B key can be used.