The HW1B-M1F10-Y is a 22mm IEC-style non-illuminated round flush momentary pushbutton switch with a yellow plastic bezel and 1NO (one normally open) contact configuration. This switch features fingersafe IP20 contacts as standard, providing tamper-proof construction suitable for industrial control applications. The device incorporates slow make double break self-cleaning contacts and is designed for easy assembly with removable contact blocks. The HW1B-M1F10-Y is part of IDEC's globally approved HW Series, carrying CE, UL, CSA, CCC (Chinese), and TÜV certifications, making it suitable for use in industrial environments worldwide. Common applications include machinery control panels, process automation, and general-purpose momentary switching in manufacturing and control systems.