30 Millimeter push button range is robust and offers long term reliability in heavy duty industrial applications and extreme environments. The 9001K operator have a metal operator base and the 9001SK operators have a plastic base. This very broad line of push button operators includes push buttons, emergency stop mushroom head push buttons, selector switches, key operated switches, and operators with potentiometers. Also includes pilot lights [LED, incandescent and neon], joystick controllers, wobble stick operators, and operators with multiple functions. These operators can be purchased as complete operators or as subassemblies that can be assembled by the user to meet specific requirements. The 9001 K metal 30 Millimeter push buttons are automatic self grounding operators requiring no additional wiring and are ABS Certified. Contact blocks have terminal screw shipped back out to speed wiring and has a very large variety of accessories. Some operators have super bright LEDs for high visibility. These operators are IP 66, NEMA 4 rated [heavy duty, oil tight, water proof and dust tight without requiring boots]. The 9001SK operators are also NEMA 4X corrosion resistant. The 9001K and 9001SK 30 Millimeter push button operators conforms to IEC, UL, CSA, EN and NOM standards. They are CE marked. 30 Millimeter Push Buttons are used in the automotive, machine tool, crane and hoist, food and beverage, industrial applications, material handling, petrochemical, wastewater treatment, metallurgy and many more industries.