IO-Link - M18 modules are industrial automation components produced by various global manufacturers, primarily based in Germany, the USA, and Japan. Companies like Balluff, IFM, and Pepperl+Fuchs are notable suppliers of these modules. These devices are widely used in industries such as manufacturing, automotive, and logistics for sensor/actuator connectivity. The M18 form factor refers to their compact 18mm diameter design, making them suitable for space-constrained applications. Key products include M18 IO-Link sensors, hubs, and masters that enable smart communication between field devices and control systems, supporting Industry 4.0 applications with features like parameterization and diagnostics.