As long as the Lutron device in not enclosed in a metal box (Faraday Cage), you should still get 30' no problem. The 434Mhz isn't affected as much by the metal construction as Zigbee and Z-Wave's 2.4GHz.
Simple automation when DIY isn't working
intuitivehomecontrols@gmail.com
fb.me/intuitivehomecontrols
Simple automation when DIY isn't working
intuitivehomecontrols@gmail.com
fb.me/intuitivehomecontrols
Tech support. Recommended relocating repeater or adding an aux. House is 2x4 and drywall construction, metal ducting for forced air.
Large or concentrated metal fixtures (air ducts, filing cabinets, refrigerators, etc.) can block RF signals, whether you are using 484Mhz, or 2GHz. I'm assuming you're talking about Radio Ra2 Main and Aux repeaters, as Caseta doesn't use Aux repeater.
Yes, that's right. The same rules would apply to the Caseta bridge as well.
I have also seen the range get shorter when you have a repeater and device that need to communicate through a steel stud wall, and where the RF needs to travel at a shallow angle through the wall. If the signal is nearly perpendicular to wall, it's all good. If you have lots of metal studs to pass through, adding an AUX repeater to create a redundant path, usually solves it. This is not an option with Caseta. Moving the repeater or smart bridge is often helpful.