The Omron CJ1W-SCU21-V1 is a compact serial communication module designed for seamless integration with Omron’s CJ series programmable logic controllers (PLCs). Equipped with two RS-232C communication ports, it enables easy connection to external devices such as programmable terminals, computers, and other control equipment. The module supports a wide range of communication protocols and baud rates, ensuring flexible and efficient data exchange across various industrial applications. Engineered for reliability and ease of use, the CJ1W-SCU21-V1 enhances system communication capabilities while maintaining a compact form factor ideal for space-limited installations. This unit may be implemented in automation environments across North America, Europe, Asia, and worldwide, delivering stable serial communication and improved control network performance.