MOTM

Anyone on the list work in the industrial control industry? I'm looking
for a wiring diagram for SICK WT6-N132 photoelectric proximity sensors.
These sensors are from around 1994. They wire colors are red, brown,
gray and blue. I remember red going to +10-40VDC and some strange
configuration of the other wires to get the desired output. I'm looking
to build a motion type trigger for my MOTM and can't seem to figure
these out. Of course I threw away the datasheets 6 years ago when I was
using them in a security application. Any help would be appreciated.
-Nate H.