"This product is part of the Harmony 9001K range, an offer of Ø 30mm metal pushbuttons, switches and pilot lights." "This pushbutton operator has round screw head." "It is ideal for petrochemical, metallurgy, mining, oil and gas applications. It is also suitable for automotive, water and wastewater treatment applications." "This product meets EN 60947-5-1/A1 standard." "It is installed into a Ø 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 Ø 30mm metal control and signaling provides robust and reliable solutions for a wide range of heavy industry applications."