The IDEC HW1L-M4F20QDG240 is an illuminated 40mm mushroom pushbutton with a momentary action and dual normally open contacts. It features finger-safe (IP20) screw terminals that accept ring, fork, ferrule terminals, and bare wires for flexible installation options. Designed to meet EN418 standards for emergency stops with IEC compliant positive action, this pushbutton ensures reliable performance. Additionally, it is UL listed, CSA certified, TUV approved, and CE marked for quality assurance in various industrial environments.