The price of installing fingerprint lock is 150 yuan -300 yuan. The price level is mainly that the doorman can open the hole without opening it 150 yuan. Now ordinary purchases can be installed at home for free. If you want to be an installation master, you can find a fingerprint lock enterprise to cooperate. If you want to buy a fingerprint lock. Fingerprint locks should be installed by professionals. Otherwise, the fingerprint lock will not only fail to work normally, but also bring invisible danger to security and theft prevention. It doesn't cost much to install a fingerprint lock. Small and medium-sized cities can handle about 100 yuan. For the sake of safety, this fee must be paid in order to install the fingerprint lock. Of course, it is safer and more reliable not to set up informal stalls cheaply, but to hand them over to after-sales service enterprises designated by experts or merchants.

At present, the installation guide plate of the anti-theft door lock is concave inward, and after installation, the lock is flush with the side of the door leaf, which makes the door crack more beautiful and avoids oversize. If the guide rail of the lock we bought is inconsistent (too long, too short or too small), the guide rail will not be fixed in the position of the screw hole of the original security door lock, or the lock will not be fixed. If the anti-theft door lock guide is forcibly fixed on the door side, the guide plate will pop out (because the lock guide cannot be manually embedded in the door leaf side), and there may be friction or conflict between the lock guide and the door cover, which makes it difficult to open the door.

There are many kinds of hooks in the sky and underground to prevent door locks. In particular, some brands of anti-theft door locks are completely different from standard anti-theft door locks. Because many brands of security doors are unique. Develop a lock according to the shape or size of the hook. If the purchased fingerprint lock is inconsistent with the lock of the original security door, the hook will not be used and the door will be sealed.

The early civil fingerprint lock has a low recognition rate, and it is likely to need to enter the door many times, and sometimes it cannot be recognized. Therefore, when buying a fingerprint lock, you must ensure that the fingerprint lock can identify the fingerprints of the whole family. Some people have low fingerprint recognition rate. Therefore, if it is possible to buy it, the family members will not recognize it, and they will settle for the second best to avoid quarreling with the merchants (some fingerprints are unrecognizable, which is a common problem in the whole fingerprint locking industry). When buying a fingerprint lock, we must first understand whether family members can be recognized by this fingerprint lock and whether they can accept other ways of opening, including cards, passwords, palms, faces and so on. Among them, the way to open the palm and face does not have this function at present, and it is necessary to purchase a facial recognition smart lock.