Allen-Bradley 1492-IFM20DS120-4 Interface Module

Allen-Bradley 1492-IFM20DS120-4 is a 20-point digital interface module (IFM) from the 1492 Wiring System. It provides isolated digital input/output channels across 20 points, with four terminals per I/O and LED indicators on the face to show the status of each channel. The DS120 designation indicates 120 V AC/DC operation, enabling direct connection to common 120 V field devices. This module is designed for use within Allen-Bradley 1492 I/O networks to expand discrete control and monitoring for devices such as sensors, relays, and actuators in industrial automation. The built-in status LEDs support quick troubleshooting and status monitoring, while the isolation between I/O and the controller provides protection from field-side transients and noise. Each of the 20 I/O points is isolated, with four terminals per channel to simplify wiring and maintain clear separation between field devices and the controller. Common applications include expanding digital I/O in 1492 wiring networks for sensing and actuation in control panels and manufacturing environments.