I mounted this just about 3m from the ground to power an LED flood in the eaves. So it is fitted in accordance with the instructions. It fails to detect anyone walking by, though if I stand on a ladder in front of it, it does notice me. It also has no vertical tilt, which is not obvious from the description or picture. I'll be replacing it with a different type. It probably works if you mount it around head height near an entrance door, but that's too short a range for my needs.
When I took it down I discovered that there is actually a little vertical tilt, but it's very stiff and very limited range. Now replaced with a Byron Elro ES90W which is doing a much better job. And costs less. Oh and this one had condensation inside the "sealed" globe, so even though the weather has been wet lately, I don't think IP44 means much on this device. Down to 1 star.