The Telemecanique XUVR1212PANM8 is a fork-format through-beam photoelectric sensor in the XUV OsiSense family: emitter and receiver are built into the two tines of a single block, so no separate reflector or paired head is required on the machine. That single-block fork construction is the reason the part is specified for label detection, edge detection, and small-part presence checks on conveyor and packaging lines where the target passes straight through the U-slot rather than across an open beam path.
The 120 mm fork depth is the headline mechanical figure: it sets the maximum object width that can pass through the slot, and pairs with a 100 MILLIAMPERE load current on a 12 TO 24 VDC supply driving a PNP, 1NO discrete output. Sensing frequency is listed at 4000 HZ with a modulated red LED transmission, so the sensor will register up to 4000 detection events per second — adequate for high-speed label and web-edge inspection, not the figure to look at for precision analog positioning. Enclosure is rated IP65, IP67 in a painted aluminum and polyamide/glass body, with an operating range of 14 TO 140 DEG F — washdown-friendly and tolerant of the ambient envelope on most packaging and bottling cells, but not a freezer-rated or high-heat specification. Approvals are UL, CSA, CE, which covers the panel-builder checklist for North American and EU machinery builds. Connection is a 3-pin M8 connector, so a standard M8 pico cordset drops straight onto it without re-termination.
Where the class is used
Fork-format photoelectric sensors of this class are specified for through-the-slot detection where the emitter and receiver cannot be wired as a separate pair — typical positions are label registration marks on labelers, web-edge or tear-tape detection on converting lines, and small-component presence checks at the infeed of an assembly cell. The modulated red LED source and 4000 HZ switching rate indicate a part aimed at discrete, fast-cycle industrial automation rather than long-range or color-discrimination sensing.
Specify the seed order code into the BOM as quoted — same electrical and mechanical envelope, same M8 connector pinout, no rewire on a panel already designed around this code.
If the panel was specified around the 180 mm fork
The XUVR1218PANM8 is the same-function sibling at 180 mm fork depth — same XUV series, same PNP 1NO output, same 12 TO 24 VDC, same 100 MILLIAMPERE load, same 4000 HZ, same M8 3-pin connector, same painted aluminum / polyamide body, same UL/CSA/CE approvals. The single decision-relevant delta is the fork width itself — 180 mm versus 120 mm — which means the XUVR1212PANM8 will fit the same wiring and I/O but does not drop into a fixture or bracket laid out for the 180 mm slot.