The Allen-Bradley 1746-IB16 is a discrete sinking input module designed for the Allen-Bradley SLC 500 Programmable Logic Controller (PLC) system. This digital input module features sixteen (16) sinking input channels grouped into one (1) common input group, operating at a nominal signal voltage of 24V DC with an input voltage range of 10–30V DC. The 1746-IB16 provides reliable and accurate input signal detection for industrial automation and process control applications. Compatible with any SLC 500 chassis, the Allen-Bradley 1746-IB16 ensures dependable performance, fast response, and seamless integration within programmable control systems.