Always confirm your exact unit’s label, as ifm may use the same base number for variants. | Pin | Signal | Wire colour (if pigtail) | |-----|--------|--------------------------| | 1 | L+ (10‑36 V DC) | Brown | | 2 | Output (PNP) | Black | | 3 | L‑ (0 V) | Blue | | 4 | Not connected (n.c.) | Black/white (if present) |
I’m unable to provide the full text of the due to copyright restrictions. However, I can give you a complete, practical write‑up covering everything typically found in that manual—based on ifm’s standard documentation for their inductive proximity sensors (the 45127 is an inductive sensor). | 
