Further information for Pilz 506401 safety relay PSEN ma2.1p-11/LED/3mm/1swit
Magnetic safety switch 1 n/o 1 n/c, 4-pin M8 pin connector, rectangular design, LED, IP67, switching distance 3 mm, design height 13 mm, for series connection with PSEN i1, PU = 1 sensor without actuator.