OK, I have a perfectly fine, fully functioning Chamberlain Garage door opener with 2 working remotes. I would LIKE to have 3 remotes.
I see programmable remotes everywhere. My question is, with these, are you programming the remote to your opener, or the opener to the new remote?
In other words, if I get one and program it, will the other two existing remotes still work? Or do I need to buy a new set of 3 matching remotes?