PSEN ma1.3a-20/PSEN ma1.3-08/8mm/1unit 506220 Magnetic safety switch 3 n/o, round M12 design, IP67, operating distance 8 mm, PU = 1 piece with M12 actuator coded, with 5 m cable (PUR). Our magnetic sensors PSENmag are ideal for monitoring safety gates and positions for all applications thanks to their manipulation-proof concept.