The Siemens 3RK1901-1KA00 is a high-quality AS-Interface accessory cover designed for PLC modules. With an outer diameter of 15mm, this cover is specifically designed to fit M12 modules, providing an additional layer of protection for your equipment. This cover is ideal for use in industrial automation settings where PLC modules are commonly used. It's crafted to the highest standards, ensuring reliable performance and longevity. The cover also comes with an O-ring, enhancing its sealing capabilities and ensuring a secure fit. This part is IP67 rated, meaning it offers superior protection against dust and water, making it suitable for use in challenging environments. Please note that this part is designed to work seamlessly with certified components, ensuring optimal performance and safety.