This is an excellent combo oven so far, but we haven't explored all of the available features.   My only complaint is that the chime (when up to temp, or timer expired) is not very loud, and hard to hear over the exhaust noise (which is quite noisy) if you are not in the same room.  The chime is set to "high".  Fortunately the app will notify me on my phone, although the upper oven is not wifi connected.