The IDEC YW1B-V4E03R is a 40mm red mushroom emergency stop button designed for efficient use of space with its compact and lightweight form factor. It features three normally closed (NC) contact blocks that are only 10mm thick, optimizing panel depth. The metal bezel enhances durability, while the removable operator and separate contact block simplify installation and maintenance procedures. This E-stop is suitable for 22mm mounting applications, ensuring easy integration into control systems.