I've had the Lorex version of this doorbell since late June this year. The installation did cause me a lot of problems as I'm in the UK (bought from Amazon US). We use lower voltages in Europe for existing doorbells so getting an appropriate transformer did cause a few headaches as did getting it to work with my Mesh Wi-Fi and
Blue Iris. Mostly my lack of knowledge to how my Mesh Wi-Fi was set up. However, since I've got it working it's been reasonably reliable.
Good;
Announces via my four Echo dots and one Echo show almost immediately.
Video and audio good.
Works well in Blue Iris as just another camera.
No monthly fee which was a must for me.
Bad:
Poor Wi-Fi range, I had to move one of my Mesh units to within 6 feet to get a stable connection.
Inconsistent announcement on my phone. Sometimes there is a significant lag even went I'm at home.
Can only have live view through one device when using the Lorex app.
Settings within Blue Iris were a bit of a learning curve to find out what suited it best as some did cause it to consistently drop signal. Mostly this was due to too high a frame rate and how the video was being processed. It still does occasionally but now its just for a few seconds instead of minutes at a time. I believe this is due to the Wi-Fi connection. If I force it to connect at 5Ghz its fine, on 2.4Ghz it drops. Unfortunately there is no way I can keep it connected at 5Ghz unless I switch off 2.4Ghz on my Mesh network which I can't do because of the 2.4Ghz only devices that I have. It seems to default to 2.4Ghz.
Would I buy it again, yes, as it does what we want which is to have a doorbell with video in our summer house at the bottom of the garden which is where we spend a lot of our time now we are both, or soon to be, retired. We were missing too many deliveries / visitors.