Pilz 502221 PSEN 2.1p-21/PSEN 2.1-20 /8mm/LED/1unit. Pilz 502221 (PSEN 2.1p-21/PSEN 2.1-20 /8mm/LED/1unit) is an exact PSENmag machine-safety catalogue item verified against its dedicated Pilz E-Shop detail page. Pilz's model-specific description is: Magnetic safety switch 1 n/o 1 n/c, 4-pin M8 male connector with LED, square design, IP67, switching distance 8 mm, height design 13 mm, PU =1 piece with actuator. The detail-page technical table records Sensor principle: magnetic; Coding level to ISO 14119: Low; Classification to EN 60947-5-3: PDDB; Supply voltage (V): 24 V; Connection type: M8, 4-pin male; Protection type, housing: IP65 IP67; Ambient temperature: -25 °C; Height dimension: 36 mm. This order code is tied to GTIN 4046548026900 and the official technical asset titled 'Operating Manual PSEN 2.1p-21'. Similar Pilz variants can differ in contact arrangement, coding, connector, cable, actuator package, sensing distance and enclosure protection, so use the exact product ID and GTIN in RFQs. Availability, price and lead time require a current supplier quotation.