These people based in Ft Madison Iowa make a first rate product and provide phone support as well as good printed and online documentation. manual:https://binst.s3.amazonaws.com/uploads/manual/asset_path/36/v6cftechnicalmanual.pdf And here is their contact info. They do answer the phone and did connect me to a tech guy right away. Kudos to a "real" company supporting their quality product. Address: 1032 Ave H, Fort Madison, IA 52627 Hours: Open ⋅ Closes 4:30PM Phone: (319) 372-8366 Contact Email: information@bartinst.com crunchbase.com Denis