Originally Posted by DMF
"not compatible" how? (see below)
Well, between the 3100 and 3500 the buses are electrically
compatible, but the command sets are different. (3500 command set is a superset of the 3100.) I'm fairly certain that they can coordinate (talk to each other) but only in a limited way.
I was referring to the QS (that now uses what they refer to as the QS link) vs the 3000/4000 series. Lutron tech support is fragmented, each person only seems to have partial answers. Sometimes they conflict. That's why I am seeking input here from actual users.
This is where I get confused. GRX-IRI works with 3500. If it works with both 3500 and QS then the buses must be electrically identical.
So the command sets are (partially) different. I'll have to find the spec for the QS command set.
Your confusion is my fault. I think what he told me was the QS accepts the PRO commands directly on the rear IR link, but it does not support the save function of the GRX-IRI.
Or just use IR? I understand RF is more convenient, but was there a compelling reason for it over IR?
The reasons I am leaning towards RF are several.
1. One bar dimmer is not LOS from about 80% of my HT room.
2. There are some locations where the two bar dimmers would both be LOS.
3. The GE systems appear to be designed for stand-alone use. RadioRA 2 seems to be the first product to provide decent integration between a GE and other dimmers. I haven't figured out any other way to get the same level of integration and functionality.
Using IR to the GE QS is still an option. For one at least it doesn't kill the mux bus and I could use wired accessories (shade, keypads etc.). OTOH, IR to the other dimmers has the problems mentioned above.
One other nice thing about RadioRA 2 is that Lutron is about to relase a hybrid dimmer/control station. The top button controls the local dimmer, the other buttons (different ordering options available) control the other dimmers, scenes or zones (including the GE QS RF).
In my case I would need a SeeTouch control panel right next to a dimmer. With RadioRA 2 I could combine them into 1 control. In addition it will allow me to control the other bar dimmer which would otherwise have been a stand-alone.
These are the options I believe are available to me.
RadioRA 2 Main Repeater
> GE QS
> Sivoia shade (wired)
> Wired SeeTouch Control panel for Zone 1 (entry hallway) and all off control by entry door.
> Bar dimmer 1 RF (in two gang box next to Zone 1 control panel)
> Bar dimmer 2 RF
This option would require IR into the GE QS and RS-232 into the RadioRA 2, so don't know if it's even practical. Maybe I would have to do an all IR as you suggested but live with the constraints in functionality.
RadioRA 2 Main Repeater
> GE QS RF
> Sivoia shade RF (according to Lutron the FP buttons on the GE QS will still control the shade even though it is not wired directly to the GE any more)
> Hybrid Bar dimmer/control panel 1 RF (controls local dimmer, other RF bar dimmer and GE QS RF from single gang box).
> Hybrid Bar dimmer/control panel 1 RF (for control of both RF bar dimmers).
Both option would be driven by a URC front end.