The ABB XI16E1-E4.0 is a high-performance digital input module designed for the S500-eCo I/O system. It provides 16 digital input channels, operating at 24 V DC, making it ideal for interfacing with a wide range of sensors, switches, and other field devices in industrial automation and control applications. This module ensures reliable and efficient signal acquisition, featuring configurable input delays and robust construction for demanding environments. Its compact design allows for easy integration into control cabinets, optimizing space and simplifying system architecture.