The SICK RLY3-OSSD400 is an advanced safety relay module designed to process signals from safety devices with OSSDs (Output Signal Switching Devices). It serves as a critical interface between safety sensors (e.g., light curtains, safety switches, laser scanners) and machinery controls, ensuring safe shutdown of equipment when a hazard is detected. This module is engineered to meet rigorous safety standards and is ideal for applications requiring high reliability in industrial automation.