The 5-Pin D-coded male M12 assembled connector has a full-metal shell which can resist the signal interference brought by the production environment.

If the signal interference in the production environment is relatively severe, products with such metal shells can be used.

The ability of the metal shell to resist interference is mainly based on the principle of electromagnetic shielding. When there are electromagnetic interference sources in the outside world, electric fields and magnetic fields will be generated. The metal shell can act as a shielding body, using the free electrons in the metal to counter these interferences.

According to the theory of electromagnetism, when an external electric field acts on the metal shell, the free electrons in the metal will redistribute under the influence of the electric field. These free electrons will generate an electric field on the metal surface that is opposite to the external electric field, thus canceling out the external electric field and preventing it from penetrating the metal shell into the internal circuit, achieving the effect of electric field shielding.

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