[Patrik]

Me and Stephen(srawls) fooled around with the sensor today and found out that one output is given for sensed and one for unsensed, but they are both the same polarity. It seemed to me that it was done this way to replace an old fashioned switch. It might harken back to the days before people had fancy programs. In fact it would seem one could just put it right into an electrical circuit without any sort of PIC to read the output, and just use the output to drive a relay of some sort. Of course I am not an electrical engineer so I might be wrong.

This is what we observed this afternoon
blue -vdc ground
black +vdc when sensed
white +vdc when nothing sensed
brown +vdc input