For the metal switch series on the website, some are marked with IK10, and some are not even marked with IK08. Similarly, why is the metal switch so different? Where is the difference?
The so-called IK is actually the international protection grade certification (International Protection Marking, IEC 60529), which contains a "mechanical impact protection" data. In EN62262, the original energy classification was changed to IK code instead, and the mark has been converted to the same quality. The way with the drop height as the standard.