Further information for TURCK capacitive sensor 2503108 - BC5-S18-AN4X-H1141/S250
Capacitive sensor, rated switching distance 5 mm, flush, threaded barrel, M18 x 1, plastic, PA12-GF30, fixed adjustment, DC 3-wire, 10.65 VDC, normally open, NPN output, connector, M12 x 1