The Allen-Bradley 1746-IO12DC is a SLC 500 combination I/O module that provides 24V DC digital inputs and DC transistor outputs in a single slot for mixed digital I/O in control systems. It mounts in an SLC 500 chassis slot and is compatible with Allen-Bradley SLC 500 PLC systems, making it suitable for I/O expansion, retrofit projects, and reliable monitoring and machine output control in PLC control panels, conveyor systems, packaging lines, assembly machines, and process equipment. Technical identifiers include Manufacturer Part Number 1746-IO12DC, Alternate Part Number 1746-1012DC, and Additional Marking 163A. Common replacements include 1746-IB16, 1746-OB16, and 1746-IO8.
