The Allen-Bradley 1797-OB4D is a FLEX Ex DC Sourcing Output Module designed for use in hazardous locations. As part of the Rockwell Automation FLEX I/O family, this module provides a reliable and flexible solution for connecting to output devices in environments requiring intrinsic safety. It features four sourcing-type output channels, operating at 24V DC. This module is engineered to mount on a 1797-TB3S terminal base, ensuring secure installation and easy maintenance within a distributed I/O system. Its robust design and certifications make it an ideal choice for applications in industries such as oil and gas, chemical, and pharmaceuticals where safety and performance are paramount.