What Is A 3 Way Wall Switch. Put a piece of tape on the wire that goes to the common terminal screw. That's just not the way it's supposed to be, is it?
This wall switch installs over your existing switches and is battery powered and communicates via zwave central scene command class to ha (not officially supported yet).
You can also pick these up at local hw stores such as lowes. The first is an outline of what you should see. Understanding how the circuit works satisfies curiosity. Basically my problem at the moment…a wall was removed that had a 3 way switch on it, and the wire is in the attic now, but still attached to the other switch in the hall (it controls.