The Telemecanique XCMD21F0L3 is a General/Heavy Duty limit switch, classified under the heavy-duty limit switch sub-category. It's the kind of switch you spec for a conveyor transfer point or a machine guard position where the actuator takes a daily mechanical hit and the signal needs to be repeatable — not a light-duty reed switch for a cleanroom door.
The UPC 12-digit barcode is 389119000362 — useful for warehouse scanning or matching against a supplier's packing slip if the nameplate is worn.