My house security door has three deadbolts, only the middle is for the key, and the rest is up and d

Updated on Security door 2024-07-26
5 answers
  1. Anonymous users2024-01-24

    To twist the key once, the upper and lower deadbolts extend halfway, and then twist one more turn to extend all of them.

  2. Anonymous users2024-01-23

    When the door is open, the deadbolt can be unlocked by screwing the key for a week, and if it does not come out, it means that the transmission bar responsible for the upper and lower deadbolts is in trouble. You have to find after-sales.

  3. Anonymous users2024-01-22

    Usually do not use the key to lock the door up and down will not be opened, with the key to lock the door up and down the pin will extend to hit the door frame hole.

  4. Anonymous users2024-01-21

    Can't use it? The upper and lower deadbolts are called heaven and earth locks.

    If you usually use the key to lock the upper and lower heaven and earth lock does not move or is difficult to move, it is estimated that the heaven and earth rod on the lock body is not connected, and it is OK to find the door seller to help you repair it. Basic after-sales.

  5. Anonymous users2024-01-20

    This won't be the case! Unless the key does not move at all, in the case of opening the door, after turning the key depends on the situation.

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