The Allen-Bradley 1797-OB4D is a FLEX Ex digital output module from Rockwell Automation, designed for use in intrinsically safe (I.S.) hazardous area applications. This module provides four (4) non-isolated sourcing output channels for controlling field devices in process automation systems. It operates with a 9.5V DC power supply and supports a load resistance range of 30 to 5000 ohms. Engineered for high reliability and safety, the 1797-OB4D module ensures consistent digital signal output performance while maintaining compliance with intrinsic safety standards within the FLEX Ex distributed I/O platform.