This head for push-button is a separate component of the range of control and signaling units, Harmony 9001SK diameter 30mm. It has a double insulated bezel. It is supplied without knob. Thanks to its double insulated bezel it is adapted for applications requiring a high resistance to corrosion. It features push pull operation. The 30 mm Harmony range offers a large choice of robust and reliable products to meet a great number of applications in heavy industries such as petrochemy, metallurgy, mining oil and gas wastewater treatment, automobile manufacturing. It is UL listed and CSA certified, CE declaration of conformity and RoHS compliant.