One would think a sensitivity of zero would produce zero alerts and 100 would trigger on all detected movement. Probably safe to say that’s not what we’re seeing.
Without the onboard IR lights, the camera is probably adjusting aperture for the low light conditions, which would amplify any light. I know in my situation, fighting car headlights is a lost cause. At least without a daytime detection zone and one for headlight time. This was an important reason for asking for profiles.