Dug out some old Wyze V2 cams I had and finally got around to getting setup. Loaded with Dafang firmware: GitHub - EliasKotlyar/Xiaomi-Dafang-Hacks
No cloud, no internet, no subscription needed. Tied into my Homeassistant server so now I get notifications on somebody in the driveway.
Takes a few seconds to trigger. And if I’m home (based on phone GPS, and/or if its connected to home wifi) it also plays over the home audio.