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Basically, there are 2 decoration keys, and the main key generally has 5 and 6 main keys.
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.
This lock is also used when decorating, regardless of whether people have been equipped with a key, prevention is the main, then, quickly replace the lock cylinder, save trouble in the future, this money can not be saved.
This 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. >>>More