[quote=“mgraber, post:1, topic:21385”]
. Several of the existing switches are 3 or 4 way in that a single light can be controlled from multiple switches, all hard wired. In this case do I need to install a regular on/off switch and then add-on switches or should they all be on/off?
[/quote] 3-way: 1 on/off or dimmer and 1 addon, 4-way: 1 on/off or dimmer and 2 add ons
[quote=“mgraber, post:1, topic:21385”]
After installing the on/off switch nothing worked. I didn’t even try to connect it to the hub yet, I was merely trying to manually turn the light on/off and nothing.
[/quote] 3-ways can be very confusing this guide may help, if not call an electrician.