The Allen-Bradley 1797-BCNR is a FLEX Ex Redundant ControlNet Barrier Module from Rockwell Automation, designed for intrinsically safe (IIC IS) applications in hazardous area environments. This module provides galvanic isolation and redundant network protection for ControlNet Ex systems, ensuring reliable data communication and enhanced safety. It operates with a ControlNet Ex system power of 7V and supports a transmission rate of 5 Mbit/s. Weighing approximately 200 grams, the 1797-BCNR barrier module delivers robust performance in mission-critical industrial automation setups requiring fault tolerance and secure signal integrity.