Ended up getting the Linear FS20Z-1 installed yesterday. I had to go out and buy a 25’ Ethernet cable in order to get my hub close enough to get it paired though.
I had a single gang outlet near the garage door button that I opened up to fit a two gang box which I put the FS20Z in.
I have a Genie garage door opener so it isn’t as simple as running the relay in parallel with the two wires that go to the opener. The Genie switch has three buttons. One for open/close, one for the light and one to lock out the switch. I had to open the switch and use a DMM to find where to solder the wires to on the circuit board. I ended up finding two very convenient thru hole test points to solder 18AWG wires to. I don’t have any pics, but if there are questions about this, I’d be glad to help.
Don’t let the slant of the garage fool you, I used a laser level to make sure the wire is parallel to the studs. I need to get some long staples to make the droopy wire not look so bad. Also, my roommate works with steel every day and is also apparently blind from the look of all the black steel residue all around the switch…
I then took the wire and ran it over to the stud bay that the switch was in and drilled a hole in the drywall to drop the wire down through. I ran the two contact wires from the FS20Z out of the gang box and used wire nuts to connect it to the new wire from the garage door switch. I did this instead of wiring them inside the box because there was no room, the FS20Z took up the entire right side of the gang box leaving only enough room for the wires coming out of the back of it. I think it turned out pretty good