The Allen-Bradley 1794-TB3T is a FLEX I/O Terminal Base Unit designed specifically for thermocouple and millivolt (mV) analog input modules. This T-style terminal base simplifies system wiring and maintenance by providing a dedicated connection point for field-side wiring. It features 3-wire spring-clamp terminations for secure and vibration-resistant connections without the need for special tools. The 1794-TB3T allows for the removal and insertion of I/O modules under power (RIUP), minimizing downtime during module replacement or system upgrades. It connects directly to the I/O module and the FLEX I/O backplane, forming an essential part of a distributed I/O system in industrial automation applications.