Position switch, 3SE51 Metal enclosure 40 mm according to EN 50041, 1 NO/2 NC quick action contacts with M12 connector, 8-pole metal with adjustable-length Twist lever Pin assignment: Pin1=21, Pin2=22 Pin3=13 and LED green, Pin4=14 and LED yellow, Pin5=31, Pin6=32 Pin 7=ground LED, Pin 8=PE