The Siemens 3RG7201-6CC61 is a SIMATIC PXO620 K80 retro-reflective photoelectric sensor with a built-in polarization filter. It runs on DC 10-36 V and delivers a PNP antivalent output rated at 200 mA, switching at 6 m sensing range. The housing measures 83 x 61 x 25 mm, terminates through a PG11 gland with a 4-pole connection, and carries IP67 protection.
The polarization filter rejects false triggers from shiny or reflective targets — useful in packaging lines or freezer environments where condensation on glossy surfaces can fool an unfiltered sensor. The PNP antivalent output gives both normally-open and normally-closed signals on separate wires, so a PLC input can detect both presence and blockage without extra logic. The PG11 gland and 4-pole connection suit standard M12-style cabling in control cabinets or junction boxes. IP67 lets it handle washdowns and condensation in cold-chain areas.