This Harmony XB5 40mm mushroom is black, operates with latched push-pull mechanism. It provides an ergonomic interface for controlling your machines. It is easily combined with Harmony range of contact blocks to perform a large variety of control functions. It is clearly distinguishable visually at a distance thanks to a prominent 40mm mushroom shape. It is impact resistant, dust resistant, water resistant and vibration resistant thanks to its IP66. It makes it ideal for operation in harsh environments.