proximity sensor & proximity switch 1) inductive or capactive 2) Sensing distance 2-10mm 3) easy connection,NPN/PNP output proximity sensor & proximity switchTOKY ... ) Different column diameter, including M8, M12, M18, M22, M30; 5) Different application, DC 3 wires, DC2 wires or AC ... 10mm and 25mm; 4) Different column diameter, including M18, M30; 5) Different application, DC 3 wires or AC 2 wires ...