This Harmony XB4, clear silicone booted black button head operates with a spring return mechanism. This silicone booted button head provides a simple solution to comply with hygiene requirement in food, beverage industries as well as healthcare and pharmaceuticals. It is easily combined with Harmony range of contact blocks to perform a large variety of control functions. It is impact resistant, dust resistant, water resistant and vibration resistant thanks to its IP69K. It has a metal bezel, this makes it Ideal for applications requiring high impact and vibration resistance. It is designed to fit in a standard 22mm cutout, ensuring compatibility when installing in pre-existing machinery. Its wide range of operating temperatures from -40°C to 70°C allows versatility in usage of product.