Right now I have the Akai MPK49.

I'm looking for a similar midi keyboard, but with automatic sliders, meaning that the sliders will move to their assigned position when I open up a saved project in my software. Its just annoying when I have to slowly move the sliders until they catch.

Or is there a separate controller (no keys) with only sliders that move automatically?
I know they exist but I don't know the name I should search for.

Help me out?
Thanks