Position switch metal-enclosed, roller plunger type c slow-action contacts 2no and unit plug 3sy3131, 6-pole and pe pin alloc. : pin1=21, pin2=22, pin3=13, pin4=14 pin5=not used pin6 ground led pe connected with stainless steel roll and two led 24 v ac/dc yellow/green led green to 13 led yellow to 14