The 1791-OB16 module is an output DC block I/O module that has been designed by Rockwell Automation and distributed under its brand Allen-Bradley. This part is able to connect different devices together. The Allen-Bradley/Rockwell Automation 1791-OB16 output DC block I/O module operates with an output voltage of 24 Volts DC and it comes with 2 mounting holes to facilitate its installation and mounting processes whether it is mounted on a wall or a panel. When installing the Allen-Bradley/Rockwell Automation 1791-OB16 output DC block I/O module includes a set of labels that need to be added to the designation labels of the module that are located on the front door. This module includes a grounding stud. Through this stud, the module can be grounded and in this way, electrical noise can be reduced. Electrical noise is known for altering signals and cause inaccurate communications that can result in failures during operations.

The Allen-Bradley/Rockwell Automation 1791-OB16 output DC block I/O module can be installed either in a vertical or horizontal position, depending on the space that is available in the installation area. It is important to mention that the performance of the module can vary depending on the position in which it is installed. It is important to leave small clearances on each side of the module to avoid overheating, and this can be done by avoiding placing other equipment nearby or by installing a ventilation device near the module. Electronic devices are prone to adverse effects by extreme temperatures and humidity levels. The temperature level around the module must not exceed 60 degrees Celsius.