The Allen-Bradley 1745-E101 Programmable Expansion Unit adds ten 115 VAC discrete inputs and six normally open relay outputs to an SLC-100 PLC, expanding I/O for basic automation tasks. It connects to a SLC-100 (or SLC-150) processor via a ribbon cable and increases total I/O capability to a maximum of 112, enabling expansion of sensors, switches, and actuated loads in small to mid-sized automation setups. The 1745-E101 is part of the SLC-100 family and provides 10 input points and 6 relay outputs rated for 10-250 VAC (50/60 Hz) or 10-125 VDC, making it suitable for interfacing a range of discrete devices and control relays.
