That's a pretty fancy unit. I'm inclined to say that it might be overkill for vaccine-storage.
I realize that there are upcoming changes in vaccine-storage regulations. I heard in a VFC in-service that in a few years, combo freezer-refrig units would no longer be acceptable (though I'm sure they'd make an exception for this device

). I can't quite remember what other regulations are on the horizon. As the time for change comes closer, I'll have to dedicate more time to this issue.
Anyone else have any thoughts?