213-1709, SICK, SICK Capacitive Threaded Barrel Proximity Sensor, M18, 8 mm Detection, NPN NO+NC, 10 → 30 V dc, Brand Sick, Thread Size M18, Sensor Technology Capacitive SICK Capacitive Threaded Barrel Proximity Sensor, M18, 8 mm Detection, NPN NO+NC, 10 → 30 V dc