This Harmony 9001SK, emergency stop / shutdown 30mm mushroom head modular red push button has 2 positions, operates with a latched turn to release mechanism. It has a double insulated plastic bezel and has 1 x NO + 1 x NC contacts and uses screw-clamp terminals. This emergency stop / shutdown button, also called EMS (Emergency Machine Stop) and EMO (Emergency Off) is connected with simple screw-clamp connections. It is easily installed into a standard 30mm diameter cut-outs. It is clearly distinguishable visually at a distance thanks to a clear color and a prominent 40mm mushroom shape. It is impact resistant, dust resistant, water resistant and vibration resistant thanks to its IP66, making it ideal for operation in harsh environments. Impact and corrosion resistant plastic body ensures product continues to operate even after severe accidents.