Total noob here, please be gentle. I’m trying to find just a very generic wall plate with 1, 2 or 4 buttons that can talk back to HA hub via Z-Wave or Wifi. You could you these buttons to kick off whatever (set a scene, dim a light, turn up volume in that room) via HAAS config. Does anything like that exist? Thank you.
I use Xiaomi buttons for that purpose Button (1st gen), Button (2nd gen),
Aqara Wireless Switch (Single) and Aqara Wireless Switch (Double) will do the job. Here you can see the details: https://home-assistant.io/components/binary_sensor.xiaomi_aqara/
You will also need a Xiaomi gateway to make them work