PSEN ma2.1p-30/6mm/1switch 506402 Magnetic safety switch 1 n/o 1 n/c, 4-pin M8 male connector, square design, LED, IP67, operating distance 6 mm, height design 13 mm,for series connection with PSEN i1, PU = 1 sensor without actuator. The mechanical safety switches PSENmech are suitable for safe monitoring of a movable guard. If guards are opened, the safety switches PSENmech are tripped.