936
edits
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added Wayback Machine links
[https://www.esa-automation.com/wp-content/uploads/2018/03/REMOTE-IO.pdf ESA Automation Remote I/O Brochure]
[https://www.esa-automation.com/wp-content/uploads/2018/03/REMOTE-IO.pdf ESA Automation Remote I/O Brochure]
[https://web.archive.org/web/20120921002237/http://www.elcon2000.it/jelcon/index.php?option=com_content&view=frontpage&Itemid=1&lang=it ELCON Elettronica Industriale & Automazione PONTEDERA (PI)] (Wayback Machine)
[https://web.archive.org/web/20161220143946/http://www.elcongroup.it/jelcon/ elcongroup.it] (Wayback Machine)