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Anonymous users2024-01-24The 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.
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Anonymous users2024-01-23Distinction: The AC key is generally red, the B key is blue, but there is a notch in the front end of the C key, and the A key can be used before and after the safety function fails.
The B key is provided to the installer.
After the installation and acceptance, as long as the C key is inserted into the lock cylinder and rotates 360°, the B key will automatically become invalid, and the AC key can be used as usual. (After the C key is turned around, use the B key to open it to make sure that the B key is invalid).
Do not try to open it with the C key during the owner's use period.
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Anonymous users2024-01-22C is the start key, which is generally a small handle, made of plastic, or there are notches on the left and right sides of the key head.
A B to distinguish the keys together. Compare a small hole with that. A hole in the decoration key is low, basically the same as the bottom surface, and the corresponding tooth of the master key should be high.
The position of that tooth is generally at the front, or the back position is low.
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Anonymous users2024-01-21Blindfold your eyes, and then put the three keys in your hand to measure the weight separately, usually the heavy one is grade A, and so on, the lightest one is grade C, you can't go wrong.
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Anonymous users2024-01-20How to distinguish the mixing of the ABC keys of the security doorIt is recommended that you can use different key rings, or use different strips of cloth to attach to the ABC key, as in the famous ABCJust get it.
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Anonymous users2024-01-19Generally, the least rotation is the first key, so when testing, do not rotate hard, you can increase the test by 90 degrees, as long as there is a tongue that can make the lock move, do not test, if in the downward test, A key will lose its effect, and so on.
The largest number of keys are available for the owner.
At present, according to the "Mechanical Anti-theft Lock" standard issued by the public security department in 2015, the anti-theft door is divided into three levels, A-level lock, B-level lock, and C-level lock, and the anti-theft performance from A-level to C-level is getting higher and higher. The differences between Class A, B, and C keys are as follows: >>>More
Nothing has an impact. My family has been using A and B keys for many years. It's normal that you haven't upgraded all the time.
I can match it. May I ask which one you lost?
If you lose the A, you don't have to match it, it is the decoration key (insert the lock cylinder with the C key, rotate 360°A, the key will be completely invalid). >>>More
A simple access card is not very expensive, but you can't enter it into the access control system yourself, so it's better to look for a property.
AB key The difference between the decoration key and the owner's key, after starting the owner's key (black), the decoration key will automatically become invalid (white), after starting, it is best to confirm whether the decoration key can open the door, keep it and don't lose it at will.