That is really cool! looks like it snaps / sits between 2 Base2 sets (either 990 or 993). My guess was the vision was for a module to be sold separately then added to the Base2 if you wanted to allow for the larger screen and maybe another controller or easier way to enter info?
IIRC, prototypes were built, but it never went into production. My memory is a little fuzzy on this, but I also seem to remember Lionel bringing a prototype for show-and-tell to one of @MartyE 's LUG meetings at York as a curiosity long after that project was shelved.
Cool, nice find!! It does seem as though it would be useful. I wonder how much of that device's functionality has been assumed by the various phone and tablet apps?
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