How to open the security door without a key

Now many families will install security doors, with good safety and weight. If I forget or lose my key, how can I unlock it? The following is the way to open the security door without a key.

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1. Open the door with the lock company. You can contact the police station, they can arrange someone to open the door, or they can find a property. They have a cooperative unlocking company, which is relatively safe. Maybe both charges are higher. After all, it was introduced by a third party. You can also find your own unlocking company, but it mainly depends on the qualifications of the unlocking company, whether there is a public security record and whether there is a business license.

2. First prepare a rectangular plastic card, insert this card in the gap between the door frame and the door, and then slide the card down.

Go to the place where the lock tongue is located, push the lock tongue away with a card, and the security door can be opened. If the door is locked, it won't open.

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3. Hit the lock cylinder. First insert the master key into the B-class lock core, and beat the other end of the master key with a hammer while screwing the key. Under normal circumstances, you can open the security door with a few knocks with a hammer. This unlocking method mainly uses the design loopholes of Class A and Class B lock cores to knock the lock cylinder marbles open, so as to achieve the purpose of unlocking.

4. Use the unlocking tool. If it is an ordinary ab lock, then a set of ab tools can be done. If there are many locks and the principles of different types of locks are different, then you can try tools such as tenth generation tin foil and soft and hard opening of tin foil. In addition, single hook, cat's eye unlocking tool, electric unlocking gun and other tools are all good choices, and the technology is relatively simple, but there are still certain requirements for hands-on ability and skills.

If the super B lock is installed, the above method will not work. At this time, you'd better ask the lock company for help. At the same time, security doors generally have multiple keys, and spare keys can be placed with close friends or family members to avoid the embarrassment of opening the door without keys.

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