The 9001K push button line has a large variety of operators and accessories for heavy industry applications. These operators are used in the petrochemical, metallurgy, mining, oil and gas, wastewater treatment and automotive manufacturing industries and more. Type K operators have a die cast operator that mounts in a 1.18 inch round hole. This illuminated momentary push button has a die cast ring nut with a clear plastic end. This push button has a 24/28 VAC/VDC light module to provide the illumination. The light module has an incandescent lamp. A colored lens cap must be added to this operator. Contact blocks with the desired contact arrangements must be added to this operator. When properly installed with a lens cap this opertor is UL listed for Types 1, 2, 3, 3R, 4, 6, 12 and 13 environments. This operator is UL Listed and CSA certified. "It is installed into a 30mm panel cutout." "A comprehensive range of illuminated pushbuttons, pilot lights, emergency stop buttons, selector switches, joystick controllers and accessories to fit your needs." "The modular range of 30mm metal control and signaling provides robust and reliable solutions for a wide range of heavy industry applications."