How to use the AB lock of the anti theft door

The AC key is generally red, the B key is blue, there is a small gap at the front end of the C key, the A key can be used before and after the failure of the insurance function, the B key is provided to the installation workers to use, after the installation is accepted, as long as the C key is inserted into the lock cylinder and rotates 360 degrees, the B key will automatically fail, and the AC key can be used as usual. AB is actually the key used by the homeowner, after the house is renovated, the general AB key is in the package, the A key is without a plastic handle, the C key has two, and the B key has 3 to 4.

1. Now most of the anti-theft door locks have A and B keys, generally A is the official key, B is the decoration key; After the official key is activated, the decoration key can no longer open the door lock;

2. Therefore, during the decoration period, the decoration key is used, and after the decoration is completed, the formal key is inserted into the lock hole and turned, and after the rotation, the decoration key will not be used, which is conducive to preventing the decoration worker from matching the key. At the same time, it does not cause the trouble of changing the locks.

Now the security doors are AB key doors, in order to prevent the renovation period, someone will give the key out privately, and wait for you to move in while no one at home steals the property. The A key is specially used for the renovation team, because the A key is shorter than the B key. When the renovation is complete, you use the B key to open the door.

The so-called A-key is unusable. Because the electric shock on the A key has become invalid. This invention is for the safety of the owner's home.

Therefore, I would like to remind friends who are decorating that please do not use the B key to open the door before the decoration is completed. If it is opened, it loses a layer of security. Avoid!

Accurately, it should be the ABC key, you don't care if he tells you how many degrees to turn, you just use the yellow key you said (it should be the key without a plastic sleeve on the key handle, that is, the B key), use this key to open the door and lock it once.

The other 5 keys will be available.

And the temporary keys you lost (those two keys were given to the workers when the house was being renovated, and after the owner moved in, the workers refused to hand over the keys on the grounds of loss of the keys or other reasons).

Go and try it, I hope it helps.

A is the decoration key, and A is effective after B is used.