I tested it out for a about a week. Tested it outside, next to AP, and next to router. My main issues were the RTSP feed, spotty connection, and dark contrast picture. I ended up returning it and sticking with my Skybell trim for now.
Positives:
180° vertical FOV allowed me to see packages on my doormat.
Live picture response was fast upon clicking the notification. (averaged 3-5 seconds)
Negatives:
No web management access.
RTSP feed was available, but unstable and would drop after a few seconds when it did connect. (maybe some kind security? maybe I used the wrong URLs?)
There was no low-res RTSP substream (Ch 2, 102)
Dark areas were underexposed in high contrast environments.
Doorbell notification would sometimes come in 10+ seconds late. (on wifi)
Connection would drop and system randomly becomes busy. (had more issues with 5Ghz)
No way to turn down/off the setup voice which is extremely loud and obnoxious.
Mounting plates don't stack with each other.
Hopefully some firmware updates can address some of these issues. I will then most likely buy it again, unless another subscriptionless doorbell comes along with RTSP and vertical view.
There's also an HSDB3 listed in the app description. Curious to see what that's all about...