Basic switch for position switch 3SE51 Metal enclosure 40 mm according to EN 50041 1 NO/1 NC quick action contacts with M12 connector, 5-pole, fixed with 2 LEDs, yellow/green, 24 V DC without actuator head Pin assignment: Pin1=21, Pin2=22 Pin3=13 and LED green, Pin4=14 and LED yellow, Pin5=ground LED