... switch. 2.Output:NPN or PNP,NO/NC selectable. 2011--SL/SC series Proximity Sensor(Inductance & capactitive) Features:1, ... industry, etc..2, SL series is inductance proximity switch, mainly for inspection of metal objects. Round shape (eg.M12,M18), standard ... , glass, water, oil, etc. mainly column, pancake, or enbossed shape. standard cable and interface, various dimensions available.4, Output: NPN ...