This head for emergency stop push button is a separate component of the range of control and signaling units, Harmony XB4, metal, diameter 22mm. It has a chromium-plated metal bezel. It is supplied with a red mushroom diameter 40 mm, marked EMO (white). It is easily combined with Harmony range of contact blocks to perform a large variety of control functions. It operates with with trigger action and mechanical latching. It is impact resistant, dust resistant, water resistant and vibration resistant thanks to its IP66. It weighs 73g. Thanks to its simplicity of installation, flexibility, and robustness, it meets the requirements of the majority of industrial applications