The instruction book says to hook up the switch in "series only" which I do not know what that means in relationship to a 3-way setup.
Question#1: Can I use the new control unit?
Q#2 - Can I use the unit on one side of room and a regular 3-way on the other? How will it work?
Q#3 - can I use both 3 ways and piggyback some electricity off one of the switches to operate the unit in a box next existing switch.
Thanks in advance to all responses.