This article explores the waterproof characteristics of micro switches, detailing the structural designs, materials, and sealing techniques that distinguish waterproof micro switches from standard ones. Emphasizing their critical role in automotive, industrial, and consumer applications exposed to moisture and dust, the article guides OEM suppliers on choosing and applying waterproof micro switches reliably. It includes detailed comparisons, common ratings like IP67, and answers frequently asked questions to provide a comprehensive understanding of the technology and usage of waterproof micro switches.