There’s a _TON_ of options available. Find any camera that supports ONVIF and they support a more or less standardized protocol for discovery and control. All

There’s a _TON_ of options available. Find any camera that supports ONVIF and they support a more or less standardized protocol for discovery and control. All of my cameras are cheap Aliexpress ones that I have never let connect to the internet (nor installed any janky manufacturer apps). They’re on a VLAN where the only other device is a machine running Blue Iris to do all the camera stuff. It supports PTZ, very configurable motion detection, alerting (including just triggering external apps so you can wire up whatever you want to it), etc. Total investment here is like $30/camera for the cheap PoE IP cameras and $80 for Blue Iris.