Product Data Sheet Omron D4N-4122 Safety Limit Switch Operating mechanism Snap action Actuator Roller lever 17.5 dia. x 6.8 Metal lever, Resin roller R26 Frequency 50/60 Hz Contact form 1NC/1NO Load General load/Micro load Conduit M20 Number of conduit: 1 Ambient temperature Operating: -30 to 70 ℃ (with no icing) Ambient humidity 95 %RH max.