Due to budgetary constraints, I opted to downgrade from a 5MP to a 3MP model. My experience with the 5MP camera was unfortunately cut short, as I encountered video-related problems. Specifically, when the unit was configured with medium sensitivity and humanoid detection, it would inexplicably switch to high detection sensitivity and disable humanoid detection after a few days. I am purchasing this because my NVR remains functional. If you choose to purchase a Hiseeu product, it would be prudent to consider an extended warranty for added protection.