The Allen-Bradley 1794-TBN is a FLEX I/O Terminal Base Unit, a fundamental component for building modular and distributed I/O systems. This base unit provides the connection points for field-side wiring and connects an I/O module to the FLEX I/O backplane. Featuring robust screw-clamp terminals, it ensures secure and reliable connections for various input and output devices. The 1794-TBN mounts easily on a standard DIN rail, simplifying installation, wiring, and maintenance within a control cabinet. It is designed to work with a wide range of FLEX I/O modules, offering flexibility and scalability for diverse industrial automation applications.