{"product_id":"simatic-sm-321-digital-input-modules-siemens-digital-modules","title":"SIMATIC SM 321 Digital Input Modules – Siemens Digital Modules","description":"\u003cp\u003e\u003cspan\u003eThis input module increases the number of inputs in the S7-300 controller from 8-64, depending on the module variation used. Apart from being compact, easy to use, and cost-effective, these modules are for isochronous mode use, for currents sourcing, or sinking.\u003c\/span\u003e\u003c\/p\u003e","brand":"Shinhang Marine","offers":[{"title":"Default Title","offer_id":42793681158192,"sku":null,"price":1.0,"currency_code":"USD","in_stock":false}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0674\/1475\/3328\/files\/httpsngabbs.comrand_698-2025-08-14T115930.128.png?v=1771790839","url":"https:\/\/martexmarine.com\/products\/simatic-sm-321-digital-input-modules-siemens-digital-modules","provider":"Martex Marine","version":"1.0","type":"link"}