{"product_id":"allen-bradley-1720-l004-4-input-gates-card-module","title":"Allen-Bradley 1720 L004 4 Input Gates Card Module","description":"\u003cdiv\u003e\u003cp\u003eThe Allen-Bradley 1720-L004 is a four-input gates circuit card (PC board) designed as a plug-in add-on for legacy Allen-Bradley PLC systems. It provides four independent input gating channels on a single module, enabling simple combinational logic to process digital inputs within the backplane. Listed in distributor catalogs as 1720-L004, the card is described as a four-input gate module in the 1720 family and is noted as discontinued by the manufacturer. In practical use, engineers historically employed this card to implement gate-level logic for input signals in older Rockwell Automation control cabinets without requiring separate external logic modules.\u003c\/p\u003e\u003c\/div\u003e","brand":"Allen-Bradley","offers":[{"title":"New","offer_id":51659009982766,"sku":null,"price":109.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0940\/0818\/1038\/files\/Ebay_website_image_a9bb553e-08a9-481b-9341-d947b0cafe48.jpg?v=1769526595","url":"https:\/\/plgautomation.com\/products\/allen-bradley-1720-l004-4-input-gates-card-module","provider":"PLG Automation ","version":"1.0","type":"link"}