Romex or individual conductors? You’ll need to post pics and or a drawing. If there is a 3-wire between the two switches, the neutral will have been sent via one conductor. The light has to get the neutral somehow.
Ok, so even though it’s not wired that way presently, you really can have a Line and Load in the same box on the right. This will give you a neutral installation in the right box into which the Inovelli will go.
The only thing I’m seeing right now is another Inovelli in the left box. You will send the Line to the right box over one traveler and send the neutral back to the left box via the other traveler. The “primary” Inovelli will have to go in the right box with the Load. You’ll have to associate the left box Inovelli via direct association.
Thanks for the tag. So just remember that association is in ONE direction, meaning that you associate a MASTER device to a SLAVE device.
Groups vary by device, but the LZW31-SN has groups 1-4, this is my plain english translation:
Group 1: Lifeline - don’t really touch this.
Group 2: On/Off control
Group 3: Slave level control back to master to keep devices in sync
Group 4: Master level control to slave(s), which could be lights or other switches.
Associations work outside of the hub, so they should be near-instant (50ms or so) and should not be noticeable if linked up properly to an average end-user (WAF). For 3-way associations the typical setup is as follows:
Group 2 Master to Slave
Group 4 Master to Slave
Group 3 Slave to Master ← Different direction
Some people have had looping issues, so they set the slave parameter to a different value, but I’ve not experienced it in personal testing, so I need to work to understand if/why this is occuring.
Tag me if you need anything further! Manuals are a great resource for this!