Maybe I missed it but I didn't see anything in the 101 on needing internet access to completely set up the doorbell. I did see that Nelly's has a setup that claims you don't need the app but that doesn't allow setup of mike, chime, and sensor area AFAIK, Is Nelly's firmware different in that aspect?
So most/many Smart DB's force you to register with their cloud service.
No, Nelly's also needs to connect to the cloud in order to setup DB and Chime properly. Many here tried to figure a way around it. Once you get past the initial setup you can remove the DB from Internet access but remote App access won't work, as you experienced. We have several here not on their cloud. Unfortunately there is no ONVIF event for Door Button Press to capture with this DB, unlike the new ReoLink, so that is why many here use Relays. So without the App you can have your NVR (
Blue Iris, ZoneMinder, etc.) send push notifications to your phone based on motion. But no two way audio communication.
AI is really helped though, you can have a snapshot sent to your phone when a person or USPS courier delivers a package. I am still playing with this AI, I presently use DeepStack...I plan to try CodeProject.AI
Here are a few links:
With LED floods you can easily do it with way less.. I have 2 30w LED floods over my driveway. When I turn them on they're almost too much for the 4K-X.
ipcamtalk.com
I implemented a custom DeepStack model to alert me when the mail is delivered because my mailbox is down the street from my home. I'm using a camera mounted near the street that also detects people and vehicles (including ALPR). The post truck detection works but will fail if the event is...
ipcamtalk.com
Custom DeepStack Model for detecting USPS logo. Contribute to sstratoti/DeepStack_USPS development by creating an account on GitHub.
github.com
Pretty kewl stuff...
HTH