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This is a Flow OEM part number A-13955 OPTO-22 Input Board With 21 White Input IDC5 Modules. OPTO22 part number G4PB24. The board is fully functional and includes output modules. This OPTO board is usable on the input OR output side if you swap the modules.
When you click on links to various merchants on this site and make a purchase, this can result in this site earning a commission. Affiliate programs and affiliations include, but are not limited to, the eBay Partner Network.