The IDEC YW4S-2E21 Metal Selector Switch is a compact and efficient solution for control operations. It features two Normally Open (NO) contacts and one Normally Closed (NC) contact within a space-saving 10mm thick contact block. The design includes a removable operator for flexibility, and its lightweight construction does not compromise durability. Installation and maintenance are simplified with the separate contact block, ensuring ease of use in various industrial settings.