The Allen-Bradley 1791-24BR is a mixed input/output Block I/O module from the Rockwell Automation 1791 series, designed for efficient signal interfacing and distributed control in industrial automation systems. It features 24 DC input channels and 8 DC relay output channels, all operating within a voltage range of 10 to 30V DC. The 24 inputs are organized into three groups of eight for simplified wiring and configuration. The 1791-24BR is designed for DIN rail installation, with vertical mounting recommended to ensure proper ventilation and reliable operation in demanding environments.