Is anyone else experiencing incompatibility using the ISY994iZw equipped with the 500 series Z-Wave board (firmware version 5.3.3 or 5.3.4) wtih the MIMOlite or MIMO 2+? A couple of years ago, I was able to successfully setup the MIMOlite with the 300 series Z-Wave board and firmware version 4.X.X. However, since updating the board and using the newer firmware, I’m no longer able to successfully setup either the MIMOlite or MIMO 2+. Is anyone else experiencing the same issue? 

@kevindavis544 I am using 5.3.4 with two MIMOlites.  However, the ISY has  never operated properly with the  MIMO 2+. 

Thank you KSchex. This is good to know. I will keep trying get the MIMOlite to work. The MIMO2+ isn't important to me. However, having a momentary contact closure device is very important in my line of work (setting up controls for individuals with severe physical limitations). Now that the INSTEON I/O Linc is basically out of the picture because of the PLM issue, I am looking for reliable Z-Wave alternatives.

I have 2 Mimo Lites that were installed with ZW 300 and now continue to work fine with ZW 500.