On the one hand, they are less sensitive to contamination than optical or capacitive sensors, and on the other hand, they are also significantly cheaper than ultrasonic sensors.

The sensors are initially available in three designs: as a threaded tube version in an M18 stainless steel housing and as a rectangular version with a height of 20 mm (QR20) or 40 mm (CK40). Degree of protection IP68 and the extended temperature range from 0 to 100 ° C guarantee permanent, reliable use of the devices that Turck offers as PNP changeover contacts with M12 connectors.