In my kitchen I have 2 wall switches, side by side. They are decora switches. One controls some internal cabinet lighting and one controls a hanging light fixture over the dining table. I want to change out the existing switch for the hanging light with a sliding dimmer. I know the kind I want (decora) but when I checked there are several different kinds. I don't know which one I need, I don't think I need the 3 Way kind. Can anyone help me make the correct choice before I buy a dimmer. Thank you.

Dave

Sounds like maybe S-600. Single pole
S-600 P Has "P"reset switch Single Pole
S-603 P Has "P"reset switch Three Way

Try here:
Lutron Electronics, Inc. - Skylark Controls


Or maybe it is Leviton Manufacturing - Building a Connected World