PSEN ma1.4p-52/ 1switch 506309 Magnetic safety switch 2 n/o, 4-pin M8 male connector, square design, IP67, operating distance depending on the actuator,height design 18 mm, or series connection with PSEN ix1, PU = 1 sensor. Our magnetic sensors PSENmag are ideal for monitoring safety gates and positions for all applications thanks to their manipulation-proof concept.