A lock B lock how to use?
There is a key above the mouth with a c key, if you use that c key will make a key can not be used, b key normal use
A, B key lock, it has A.B two keys. It is the key to play "pit", composed of a ball and other structures of a lock
(The depth of the pit is different, and the difference between the depth of the tablet key is the same). Also called "carbazole bar lock"
And "computer lock also called" partial lock "and" Billy lock ".
A, B key role is that when people put the lock, the owner can be A key to the house decoration staff for them
Access to the door to unlock the door, so also known as A key for the "decoration key." When the decoration is completed, the owner does not need to install
Repair personnel into the room, the owner with a B key inserted into the keyhole to turn the cylinder after a turn (circle), A key lost
Lock function, so the B key is also called "homeowner key".
A.B key lock has the advantage of being able to meet the needs of people to renovate the house, remove the busy when the decoration will open the door key,
Or people with bad intentions by the decoration of the machine to copy the door to open the door, etc., may avoid the decoration after the owner of the
Insecurity, but also to avoid decoration, in order to security and lock the trouble and cost, so by the people welcome.
