NOT RECOMMENDED because of the limited tilt capabilities! Useless if mounted on the edge of a roof because someone would almost have to be directly under it to be seen! The dang thing will not tilt up much higher than about 30 degrees from horizontal. Even when I mounted my PIPCAMHD45 about 20 feet in the air the center of the screen image was only about 30 feet away from the base. From that height I was able to see the fringe of the viewing image at around 70 feet away from the base during the day but at night it is useless because all the illumination from the IR LEDs is in a bright spot in the middle. BIG DISAPPOINTMENT!