The IDEC YW4B-M1E21S is a compact and efficient pushbutton featuring a flush metal bezel designed for 22mm mounting. Its space-saving design includes 10mm thick contact blocks, while the removable operator ensures flexibility and ease of use. The unit's lightweight construction is complemented by a durable metal bezel, with unibody pilot lights and key selector switches also available. Additionally, the separate contact block simplifies both installation and removal processes.