What should I do if there is too much lead powder on the lock hole of the anti theft door?

Pressing the intercom doorbell can not be unlocked, because the door lock electromagnet is not engaged, so it cannot be unlocked. It is possible that the key of the doorbell is damaged or the contact is poor, and the power supply of the door lock electromagnet is not connected, resulting in the door lock cannot be engaged, and it is also possible that the door lock electromagnet is damaged, and it cannot work, which will also cause the door lock to be unable to be opened.

Is it an anti-theft door lock.

Asymmetry, you can look for property. >>>More

I asked for someone to change me and told him what you wanted.

Wipe the surface of the lock clean with a dry cloth.

Use soybean oil, sewing machine oil or sesame oil to drop into the keyhole, dip the key in a few drops of oil at the same time, insert it into the keyhole and slowly twitch back and forth a few times, feel smooth, and then twist the key to open. >>>More

The role of the anti-theft door in the home is really not small, every family is indispensable to install it, but the lock will be difficult to open after a long time. 1.When the key in and out of the lock hole is not smooth, or it is very difficult, go to the small commodity market to sell lighter counter, buy a box of the smallest package of kerosene, the box has a sharp mouth, the tip of the mouth to the lock hole squeeze a few times, kerosene will go down the lock hole, after a few minutes, take the key to unlock, the key can be very smooth in and out. >>>More