Honeywell CR7189R1004 - Rev. A vs Rev. B - what's the difference?

I've noticed that there are two different revisions of the Honeywell CR7189R1004 Wireless Indoor Sensor. When looking at the cardboard box these come in (red box vs. white box), on one of the ends under the barcode, it lists the following:

50059805-001 Rev. A
or
50059805-001 Rev. B

What's the difference? Both share the exact same model number of CR7189R1004. I can nothing on the web regarding this. Could it just be the box color is different, or a instruction manual difference? Thoughts?

source https://hvac-talk.com/vbb/threads/2241188-Honeywell-CR7189R1004-Rev-A-vs-Rev-B-what-s-the-difference?goto=newpost