The SIXNET 60-IOMUX IO Multiplexer Expansion Board is an I/O multiplexing module designed to extend a SIXNET Digitronics control system. Listed with the Digitronics 6-IO32-TBFE family (also cataloged as 6-1032-TBFE), it uses TBFE-term termination blocks to connect additional digital I/O to a Sixnet controller. Refurbished units are commonly sold by distributors such as York Controls, indicating availability as a replacement expansion option within a Sixnet/Digitronics installation. As a Sixnet-branded expansion board, it serves to extend I/O capacity in industrial automation environments that rely on Digitronics hardware.
