The IDEC HW1B-V4F21R-K is a robust 40mm mushroom-head emergency stop button designed for critical safety applications. This non-illuminated E-Stop features a push-lock turn reset mechanism, ensuring quick and reliable action in emergency situations. The unit comes with a durable plastic bezel and is part of the HW series, suitable for 22mm mounting. Its straightforward design ensures ease of use and installation in various industrial settings.