The Allen-Bradley 1746-NI4 is a high-performance analog input module designed for the SLC 500 programmable logic controller (PLC) platform. It provides four single-ended, non-isolated input channels that can be individually configured to accept a wide range of voltage or current signals from sensors and transmitters. With its 14-bit resolution, the 1746-NI4 offers precise data acquisition for monitoring and controlling process variables such as temperature, pressure, and flow. This module is ideal for applications requiring accurate and reliable analog signal conversion within an industrial automation system, enhancing control system capabilities and performance.