... NPN or PNP,NO/NC selectable. 2011--SL/SC series Proximity Sensor(Inductance & capactitive) Features:1, High frequency response ... and interface, various dimensions available3, SC series is capacitive proximity switch,universal inspection for metal, plastic, glass, water, ... Frequency Meter, flowmeter,Timer,Timer Relay, Solid State Relay, Proximity Sensor, Pressure sensor, load cell sensor, KNE KSC box ...