This Harmony XA2 emergency switching off / shutdown 30mm mushroom head modular red push button operates with a latched turn to release mechanism. It has a plastic bezel. This emergency stop / shutdown button, also called EMS (Emergency Machine Stop) and EMO (Emergency Off) is easily installed into a standard 22mm diameter cut-outs and connected with simple screw-clamp connections. It is clearly distinguishable visually at a distance thanks to a clear color and a prominent 30mm mushroom shape. It is dust resistant and water resistant thanks to its IP65 protection index. It is ideal for applications requiring good resistance to chemical agents and/or double electrical insulation.