SENSOR; TYPE:POLAB PBA CAPSULE, MATERIAL:BRASS,NICKEL-FREE COATED, ENCLOSURE RATING:IP68; DIMENSION:18 X 86 MM, STYLE HOUSING:M18 X 1, INSTALLATION F/FLUSH MOUNTING, SENSING RANGE:5 MM, SWITCHING OUTPUT:PNP NORMALLY OPEN (NO), SWITCHING FREQUENCY:2000 HZ, PN:BES M18MP-PSC50B-S04G,M:BES04T5