The Dwyer CP4-M1T1C1 (when configured as a flow meter interface module) is a 4-channel PLC-compatible I/O hub integrating 1x 24VDC NPN output, 1x thermocouple input, 1x analog current/voltage input, and M12 connectors, enabling seamless integration of flow sensors (e.g., turbine, vortex, thermal) into industrial control systems for real-time flow rate monitoring, alarming, and PID process optimization.