I've been thinking about just getting off the shelf system like Hivision IP camera and NVR, then run it on a separate network disconnected from internet. It sho

I've been thinking about just getting off the shelf system like Hivision IP camera and NVR, then run it on a separate network disconnected from internet. It shouldn't be much more expensive, but still I'd probably disassemble cameras to make sure there is no wifi of other means to leak data.