The IDEC HW1B-M4F20-R is a robust 40mm red mushroom pushbutton designed for quick actuation in industrial environments. This non-illuminated, momentary switch features a durable plastic bezel and is part of the HW series. Engineered for 22mm mounting, it offers reliable performance with its straightforward push-to-operate mechanism, making it suitable for a wide range of applications that require an emergency stop or reset function.