PSEN ma1.4a-57/PSEN ma1.4-10mm/ 1unit 506327 Magnetic safety switch 2 n/o, 1 auxiliary contact n/o, square design, LED, for series connection with PSEN ix1, IP6K9K, switchingdistance 10 mm, height design 18 mm, 5 m cable, PU = 1 sensor with actuator.