For a doorbell, my WeMo doesn’t like being outside. It was always going offline during the summer, was rock solid for a few weeks when the temps initially dropped, and is now going offline again in the cold. It still works as a doorbell when it goes offline, but the camera, motion sensor and mic/speaker aren’t accessible, and they’re kind of the point.
I need another one for the back door, but I’m holding off to see if this one settles down, or if a more robust alternative comes out (the WeMo is one of two models that works directly with iCloud for video monitoring/storage).