The WT00Z-1 is interesting because unlike the GE 12723 add-on switch, it does not require a traveler wire, which allows it to be installed with no connecting wires to master switch.
Can the WT00Z-1 be used with GE 3way switches? Either by using minimote to associate GE master with WT00Z-1 or using WT00Z-1 as one button scene controller through hub to control GE master.
Can WT00Z-1 be used a one button scene controller? Can I associate it with my GD00Z garage door controller so the light is on when the door is open? And use the WT00Z-1 to close my garage door?