Ask HN: IP cameras that don't require an app or internet? 3 years ago
I own two Reolink cameras. These are very cheap, like 50 EUR or so, and come with wireless and ethernet connectivity. They speak RTSP and have a web UI. You can set them up entirely locally through that web UI.
I cannot attest whether they phone home or not as I run them on an isolated network, but they work fairly well and the web UI exposes all the features the camera has.