How to prevent magnet demagnetization in anti-theft AM label

The anti-theft AM label is a label commonly used for commodity anti-theft. It is usually composed of materials with magnetic and acoustic properties and is used to work with the anti-theft door system. The working principle of the AM tag is based on the combination of magnetic field and acoustic signal. The alarm is triggered by changing the state of the magnetic field when the anti-theft door is detected.

However, if the magnetic part of the AM label is disturbed by a strong magnetic field, especially a strong magnet, it may cause the loss of magnetism of the tag, making the label invalid and unable to trigger the anti-theft system alarm. Therefore, avoiding magnet demagnetization is an important issue to ensure the normal operation of the AM tag.

The following are some strategies to avoid magnet demagnetization:

1. Design magnetic protection for the label

Shielding protection: The magnetic components of the AM label can be protected from the influence of strong external magnetic fields by using magnetic shielding materials.

Enhance magnetic stability: When selecting magnetic materials during design, materials with high magnetic stability and anti-demagnetization ability should be selected.

2. Strengthen the physical protection of the tag

Anti-magnetic shell: Adding an external protective shell to the anti-theft AM label can effectively isolate the strong magnetic field from the outside.

Anti-magnetic label packaging: In some high-risk environments, anti-magnetic packaging can be provided for the AM label to prevent strong magnetic fields from affecting the tag.

3. Avoid contact with strong magnetic fields

Keep away from strong magnetic field equipment: During the installation, use and storage of the label, the label should be kept away from strong magnetic field sources.

Reasonable storage and transportation: When transporting and storing AM labels, they should be avoided from being transported with strong magnetic field sources.

4. Label calibration and testing

Regular testing: Regularly perform functional testing and calibration on AM labels to ensure that the magnetism of the label is still effective.

Testing equipment: Some high-end anti-theft systems are equipped with the function of checking whether the magnetism of AM labels is normal. You can check it before putting it into use to ensure that the label is not demagnetized or damaged.

5. Choose high-quality AM labels

Quality control: Choose AM labels with guaranteed quality, ensure that the materials used in the labels meet the standards, and that the magnetic components have strong anti-demagnetization performance. Low-quality AM labels may be more susceptible to external magnetic fields and thus fail.

6. Reduce the exposure of labels to strong magnetic field environments

Sign environment: In some high-risk areas, such as strong magnetic field environments, warning signs can be set to remind staff or consumers to avoid placing labels in these areas, thereby reducing the chance of labels being exposed to strong magnetic fields.

In short, in order to prevent the anti-theft AM label from being demagnetized by a magnet, the most important measure is to protect the magnetism of the tag through magnetic shielding, physical protection, proper storage, and avoiding contact with strong magnetic fields.