What it is
The XUBTAPSNM12 is a Telemecanique photoelectric sensor from the XUB family, branded here under Square D Switches & Sensors, carrying UPC 389119020841 on the listing.
Where it fits
It sits in the photoelectric sensor category — the diffuse-reflective / through-beam class of devices used on conveyors, packaging lines, and small-part detection stations where a discrete PNP/NPN output to a PLC or relay block is the job at hand. The M12 suffix in the order code indicates the integral M12 connector variant, which is the standard four-pin plug common to most European sensor footprints and keeps wiring to a single cordset rather than a fixed cable exit.
Production status
Lifecycle stage is recorded as current, so the part remains in normal distribution and is specified into the BOM as a live, orderable line.