{"product_id":"automationdirect-d4-ram-1-memory-cartridge-d4-ram-1","title":"AutomationDirect D4-RAM-1 Memory Cartridge D4-RAM-1","description":"\u003cdiv\u003e\u003cp\u003eThe D4-RAM-1 CMOS RAM memory cartridge with a built-in lithium battery provides 7.5K of program storage for AutomationDirect DirectLOGIC D4 PLCs. This battery-backed RAM preserves memory contents when power is removed, enabling retention of the user program between power cycles. The part is a retired AutomationDirect item (retired May 2016) and is no longer available from the supplier; AutomationDirect recommends D4-EE-2 as a replacement. Key specs include a 7.5K program capacity and a lithium-backed CMOS RAM memory cartridge whose memory can be cleared electrically, reflecting its retention design for legacy D4 systems.\u003c\/p\u003e\u003c\/div\u003e","brand":"Automation","offers":[{"title":"New","offer_id":51660370018606,"sku":null,"price":68.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0940\/0818\/1038\/files\/Ebay_website_image_e6487582-166c-46a5-aaec-4a60009b415b.jpg?v=1769536903","url":"https:\/\/plgautomation.com\/products\/automationdirect-d4-ram-1-memory-cartridge-d4-ram-1","provider":"PLG Automation ","version":"1.0","type":"link"}