I have a Rhino 4FT Pro, 2FT Carbon Core or similar V1 Slider will it work with the eMotimo TB3/spectrum?

Yes! The eMotimo Belt Drive from Rhino includes everything you need to have the TB3 setup to control a V1 slider. For spectrum users we are working on a new motor cable and will have it available in our store soon, otherwise, all other items in the Belt Drive kit will work with the new unit!