What should I do if the magnetic button key entering the unit door degausses?

The reason for degaussing the magnetic lock key entering the unit door is that the internal circuit of the magnetic lock key is damaged. You can contact the property personnel to replace it in time.

The magnetic stripe is made of magnetic powder. If the magnetic stripe is close to the strong magnetic field, the order of the magnetic poles will be rearranged, and the originally stored information will be rewritten, thus losing the information. The high-frequency electromagnetic wave of mobile phone, the magnetic hidden button of lady's handbag and the setting of nuclear magnetic vibrator may demagnetize the magnetic card. To prevent magnetic card degaussing, we should pay attention to three aspects.

The locks of some backpacks and wallets are "hidden buttons" made of magnets, and all kinds of magnetic cards with magnetic stripes should be kept away from such magnets. Do not bend the magnetic card, and prevent sharp objects from wearing, scratching or twisting the magnetic stripe. Several magnetic cards are put together and rubbed against each other. Although the magnetic card can't be degaussed, it will damage the magnetic stripe area and the card can't be used again.

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The prevention of degaussing is described as follows:

Therefore, it is best to put the magnetic card in a special card bag or in a protective case. Magnetic cards should be kept away from high temperature or humid environment. Generally, magnetic cards are made of PVC, which will deform or even burn at high temperature, directly leading to the damage of magnetic strips. If the magnetic card is placed in a humid environment or soaked in water for a long time, it will also cause the card to crack and be damaged, and finally it cannot be used.

You can make a small protective bag with aluminum foil used in the kitchen, or even a cigarette case with aluminum foil layer in the early days. You can know if the aluminum foil is burned to a corner. Putting an important magnetic card inside can block the interference of electromagnetic waves and magnetic fields and protect the magnetic card from degaussing.

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