The CE4T-10R-20 Machine stop is: Compact - Machine stop - Twist release - Maintained - Mushroom 40 mm - Red - Non-illuminated - 2NO - 0 NC - 24 - 300 Volt This Machine stop is part of ABB's compact range, the most efficient all-in-one solution available, reducing installation time and cost. The compact range has a high level of dust and water resistance.