Voltage monitoring

I was wondering if the RB411AH has voltage monitoring, I know the 433AH does and I was hoping that the extra bucks being spent for the AH model means more than a license upgrade and a faster processor. Is there a reason that you don’t put voltage monitoring on all of the new generation boards? It seems it would be relatively inexpensive and I’m sure people would pay a little more to have more information…

currently only RB433AH supports this