I had a glimmer of hope when I found [this] (https://www.amazon.com/Wireless-Monitoring-Photograph-recording-Apartment/dp/B0BL2MSXM6), but it has pretty bad reviews.
Sorry if it’s a dumb question. This is brand new to me, and when I looked at some old threads on the topic I felt over my head.
Just buy a conventional webcam/ipcam and use that in addition to a conventional doorbell. If you’re not wanting it to be Internet connected, you aren’t going to be using away from your home.
What? That’s not how networking works. Your devices can be disconnected from the internet and still be accessed remotely.
Completely disconnected from the Internet means that packets can’t make it from the device to the Internet. You achieve this through physically separate networking, VLANs or simply relevant firewalls. With a stateful firewall you can get picky with restrictions on TCP SYN packets to get fine grained control of who can establish a connection. I felt this level of detail was inappropriate for OP’s self proclaimed technical proficiency.
Possibly OP means Internet connected, but not using a third party service to handle the feed. If they do, then they can ignore my comment and select something more appropriate from other helpful contributions.