Operating Heads - Plunger Actuated: Type - Limit Switch Head and Operator; Head/Operator - Top Pin Plunger; Head Action - Spring Return, Standard; Operating Force - 11.77N OF; Pre-Travel - Travel To Operate - 0.07 in (1.8mm) PT; Over-Travel/Total-Travel - 0.118 in (3mm) OT; Operating Temperature - min - 14 deg F (-10 deg C); Operating Temperature - max - 158 deg F (70 deg C); Switch Model - Standard; Manufacturer Series - D4C