-
That's because the lock in your house was picked by a thief, and then the lock cylinder inside was damaged, but it was not completely broken. So you can open it with the B key. The A key can't be opened.
It is recommended that the merchants who sell security doors consult and let them go to the scene to see the situation!
-
I really want to ask, hasn't your home been renovated yet? Why are you still using the A key? Don't you read the instructions on the key when you use it?
-
This still has to ask professional people, my home is the anti-theft lock of the group, generally ask them, the service attitude is very good.
-
It should be the previous one that was destroyed, or it shouldn't be like this, I don't know what lock you're using?
-
There is a problem with the lock, and if the lock is fine, you have a problem.
Is the security door of your house the same brand installed in the same way? >>>More
Summary. Under normal circumstances, if you lock the security door with a key from the house, the key will not be removed and it will not be opened from the outside. This is because the locks on the security door are generally "one-way locks", that is, they can only be opened from the inside and cannot be opened from the outside. >>>More
You can find a way to pry off the lock cylinder yourself, and then change the lock cylinder, which is only a dozen yuan.
Magnetic lock keys are different from traditional mechanical lock keys, and the lock shops on the street cannot match such keys, so you need to contact the manufacturer. This magnetic lock technology is not very mature and unreliable, so it is best to replace it.
Because there is a transmission mechanism of the lock tongue inside the lock body, when the lock cylinder rotates, the fork in the middle of the lock cylinder will drive the transmission mechanism of the lock tongue, thereby driving the indentation or extension of the lock tongue, the gear is also there, the fork is also there, the function is indeed the same, I don't know if I say this, you understand it.