My device is mounted on the ceiling. I measured the Install Height and set that at 2.6m. I have played with Height Threshold, at around 0.4-0.6m, and I get false fall indications when no one is in the room at all. This morning, for example, there were several over a period of about 15 min (see pic in this location).
I am pretty sure that these false positives were caused by someone moving in the room above where the device is mounted. If so, this is way too sensitive and the device needs to be able to screen for this kind of thing.
Thanks!