The Allen-Bradley 1756-IB16 is a DC digital input module for the ControlLogix platform. It provides 16 individually isolated sink inputs, designed to receive signals from various field devices like sensors, push buttons, and limit switches. Operating at a 12/24V DC voltage range, this module is a robust and reliable solution for monitoring discrete state devices in a wide range of industrial automation applications. Its integration into the ControlLogix chassis allows for seamless communication and control within a larger Logix-based system, making it an essential component for data acquisition and process monitoring.