FAQ: Full list of buttons and remotes confirmed to work with SmartThings [Not all devices listed work with the 2020 Platform]

(US) Leviton VRCS4, mains-powered. Typically costs around $125.

This one is tricky to get set up, but appears to work well once it is. There are two different models. One does not control the current, so it acts only as a scene controller and will not work if the Internet is down. The other model has one of its buttons dedicated to controlling the line that it is wired into, but then that means one of the buttons is reserved for that purpose. So read the thread carefully so you know which one will fit your own needs.