1746-A10, SLC500 10-Slot Rack, Ser B x 1 Piece. 1747-L542, SLC500, Processor Unit, Ser C Proc. Rev 7 x 1 Piece. 1746-IA16, SLC500 Input Module, Ser C x 5 Pieces. 1746-OW16, SLC500 Output Module, Ser C x 3 Pieces.
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