I had a Z-Wave light switch, non plus, along with an Add On Switch for a 3 way setup. Always worked fine.
I wanted to change it to a Plus. So I changed the switch out. The Add on switch started doing some really weird stuff. Would blink the light. Sometimes it wouldn't stay on or off.
So I got out the instructions on the new switch. It specifically said DON'T USE AN ADD ON SWITCH. Use a normal 3 way switch.
Guess I learned my lesson.
