Thank you so much for your reply and offer for assistance.
I essentially only want to be able to look back if someone is at my door. I assume that is what the 12 second cloud-stored clips will do, and I do see that I can download them to the base station as a backup.
For example, if I don’t hear or see the notification, I want to be able to look back at it, and yes, perhaps play it back. Is that function available via the base station backup? What about download? I’ve seen others post videos of their ring or nest cameras if they capture something unusual. Is this able to do similarly?
I also don’t quite understand the scheduling, or any of the other features available when the SD card is present. I really wish they had a better user manual.
I only test the voice capability once, it didn’t seem all that clear or loud. I don’t see any settings for it either.
So yes, I was thinking the outdoor camera would work more similarly to the indoor cameras.
I’m still confused as to how many SD cards I need to buy 
Thank you very much.