It is recommended that you are approximately 1.5M (the maximum height of the walls) plus. One hundred seventy-six meters in height for every meter of distance between the wall and the camera. E.G., If you mount the camera 50M away off the wall you will mount the camera 1.5+(50*. Then, you would have to mount it 1.5+(50*.) meters high which is 10.3meters high.