@B.Will I'm stumped, not sure what I did, if I did something wrong or if it was not wired correctly to begin with. It won't hurt anything if I switch the two blacks on the HS210 eventhough that...

@B.Will Here is a picture of the one I replaced, on the left. Bottom black is labeled Common on the switch so I put that to line/load of the HS210 and put the other Red and Black on the travelers,...

@B.Will If I hook up an HS210 and it only has power when I flip the other switch, then I hooked it to the wrong switch of a 3 way right?

@B.Will Thanks again, don't have one, will have to order!

@B.Will Now, I installed my 2nd HS210 in a hallway that has 3 switches. The HS210 is installed and working at the first of the three switches. I'm at the second switch trying to install a dumb rocker...

@Tony Told you it was a stupid question! I just wanted something similar with the light ring but I settled for a rocker switch..