Concord 4: which motion sensor to use?

I have a few motion sensors laying around but need some help.

What is the difference between Interlogix 60-511-02-95 and Interlogix 60-807-95R?

Are both compatible with my Concord 4 panel? Is there anything else I should know before I add more motion sensors?

Both are pet immune motion detectors compatible with GE 319.5 mhz radios like the one on the Concord 4.

The 60-807-95R is the more recent model I believe. I’m not finding the other model on interlogix’s website for documentation.

In general Interlogix stopped producing security systems recently and parts have been discontinued. Some parts may be harder to find as time goes on.