On March 7, 2017 at 01:08, tweetymp4 said...
Huh? MX-850's work perfectly with the URC/Lutron dimmers and switches directly via RF. No Ir involved. The dimmer tested was an MRFA-6MLV.
see...
[Link: ebay.com]URC product, no "little ir window"
Wow that's a big revelation for me on that one. Always had it in my head it started with MX-900 and 950. Thanks!