Over a 20 year span, there have been over a dozen different hardware model families and three different Interact products (Interact, InteractX and Interact Xpress) . These units have a variety of Operating Systems starting with MSDOS/ROMDOS and almost every Windows version over that period of time.
The table below is just a quick view of what each of the product lines had on them. (Click on image to expand)
Links to a more detailed look at model number structures for each product.
Interact Xpress Hardware