The OMRON ZEN-20C3DR-D-V2 is a digital input module from the ZEN line of I/O products. It is intended for use in machine automation and process control applications. It features 8 digital inputs, 3 relay outputs, integrated DC/DC converter and built-in power supply isolation. It has various functions and features for easy integration with various microcontroller systems. The module is equipped with a signal LED, allowing the user to easily monitor the status of the inputs. Also, the module is designed to be vibration and shock-resistant, ensuring it is able to perform reliably in industrial environments.