The Allen-Bradley 1745-E151 Expansion Unit for the SLC-150 PLC adds eight input and eight output I/O channels to an existing SLC-150 controller, enabling more field wiring without replacing the processor. This expansion module is listed as the 1745-E151 variant within the SLC-150 IO expansion family by multiple distributors. It operates from a 10–250 V AC supply at 50/60 Hz, a power range commonly used for AB expansion units. Designed for legacy automation setups that rely on the SLC-150, it broadens discrete sensing, signaling, and actuating points within compact control panel installations.
