... PNP,NO/NC selectable. 2011--SL/SC series Proximity Sensor(Inductance & capactitive) Features:1, High frequency response, long service ... paper-making, light industry, etc..2, SL series is inductance proximity switch, mainly for inspection of metal objects. Round shape ... system etc. They are widely used in industrial control and measurement field, such as machinery, electrical cabinet, power sub-station ...