The Foxboro FBM233 is a Redundant Digital Input Interface Module designed for the Foxboro I/A Series system. It provides a reliable interface for 32 discrete input channels, making it ideal for critical process control applications that demand high availability and fault tolerance. The module operates in a redundant pair, ensuring continuous operation even if one module fails. It is engineered to monitor contact sense inputs from field devices, translating their status into digital signals for the control system. The FBM233 is a robust solution for safety-critical and process-intensive environments where system uptime is paramount.