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Anonymous users2024-01-24This is the unique design of the anti-theft door company, if the householder key is opened, the decoration key can still be used, then the decoration is good, you live in, how dangerous.
All the security doors are like this, worried about the decoration process in the decoration workers privately add the key, so as long as the main key is opened as soon as the decoration key is useless, so it is safer for the owner.
Summary. There are two principles, and the principle is as follows: >>>More
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.
Locking 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.
If you use the official key to open the lock once, the decoration key will be invalid and you will not be able to open the door.
As long as you insert the so-called other keys in and turn 360 degrees, use them once, and the decoration key will naturally become invalid.