Omron Capacitive Barrel-Style Proximity Sensor, M18 x 1, 8 mm Detection, NPN Output, 10 → 30 V dc, IP66

General Purpose Capacitive Sensors. The E2K-X series of threaded capacitive sensors permit non-contact detection of metallic and non-metallic objects such as glass, wood, water, oil and plastic. Fixed sensing distance requires no sensitivity adjustment Heat-resistant ABS resin casing LED indication Rated to IP66