Meixin, the anti theft door switch has a squeaky sound, how to open and close the door squeaks.

Let's take a look at what the sound is, if it is a hinge, you can use some lubricating oil, it is also possible that there is something dirty inside, you can wash it with water first, and it may be that the rubber strip is loose, if the hinge is loose, the door leaf is small, and it is possible to squeeze into the rubber strip, there will be a sound, if it is the tongue of the lock, do not use lubricating oil, you can use pencil foam, the effect is very good, you can try.

Generally, it is the sound made by the hinge of the door, and you can put a few drops of oil on the hinge to lubricate it to reduce the sound.

Hinges lack lubrication, the sound of iron grinding iron.

I use grease for exclusive use of hinge hinge, hinge grease of tiger head ホトルベ or Kluber Kluber. They are food grade certified. You can take a look at Peach Leopard, which comes in a 130-gram toothpaste-like package and is easy to use.

It is also not advisable to use engine oil or ordinary butter, which will freeze in winter, and the harmful smell will affect the health of the body, and it will soon volatilize and lose its effect.