... AC 2 wires4) Different column diameter, including M8, M12, M18, M30; typeInductance type proximity sensorsSeriesNY-M12NY ... type 15mmModel No.DC two-wire systemNY-M12-S2TONY-M12-N4TONY-M18-S5TONY-M18-N8TONY-M30- ... M30-S10TCNY-M30-N15TCDC three-wire systemNPNNY-M12-S2NONY-M12-N4NONY-M18-S5NONY-M18-N8NONY-M30-S10NONY ... M30-S10PCNY-M30-N15PCAC two-wire systemNY-M12-S2AONY-M12-N4AONY-M18-S5AONY-M18-N8AONY-M30- ...