Inductive sensors in a plastic threaded barrel design and an antivalent output have been added to Turck's uprox series of factor 1 sensors that offer the same large switching distance to all metals. The new sensors combine the benefits of a one-piece barrel design with those of a closed front and translucent end cap. In this way, users benefit from the resulting increased sealing capacity and long service life. The translucent end cap enables status indication signals to be visible from all sides. This saves the user considerable time during commissioning or troubleshooting.