IO-Link - M23 modules are a category of industrial communication devices produced by various manufacturers, primarily from Germany and other industrialized nations. These modules are part of the IO-Link system, a standardized technology (IEC 61131-9) for smart sensor and actuator connectivity in industrial automation. Companies like Balluff, IFM, and Pepperl+Fuchs offer IO-Link - M23 modules, which feature robust M23 connectors for harsh environments. They serve industries such as manufacturing, automotive, and logistics, enabling real-time data exchange and parameterization of devices like sensors, valves, and drives. Key products include masters, hubs, and interface modules that integrate with PLCs and control systems.