proximity sensor & proximity switch 1) inductive or capactive 2) ... Capactive proximity sensor with following features:TK series column shape inductive type with follow features: 1) ... sensing distance, from 2mm to 15mm; 4) Different column diameter, including M8, M12, M18, M22, M30; ... sensing distance, including 10mm and 25mm; 4) Different column diameter, including M18, M30; 5) Different application, ...