... .Output:NPN or PNP,NO/NC selectable. 2011--SL/SC series Proximity Sensor(Inductance & capactitive) Features:1, High frequency response, ... ), standard cable and interface, various dimensions available3, SC series is capacitive proximity switch,universal inspection for metal, plastic, glass, water, ... Barbara Guo) 086-13435730867(Peter Liao) 2011--SL/SC series Proximity Sensor(Inductance & capactitive)