nominal sensing distance Sn 8 mm IFRM 18N37A4/S14L dimension 18 mm voltage supply range +Vs 10 ... 30 VDC protection class IP 67 current consumption max. (no load) 10 mA hysteresis 3 ... 20 % of Sr switching frequency < 500 Hz housing material brass nickel plated tightening torque max. 40 Nm material (sensing face) PBT operating temperature -25 ... +75 °C manufacter SKU IFRM 18N37A4/S14L mounting type quasi-flush voltage drop Vd < 2 VDC output circuit NPN break function (NC) output indicator 3 port LED red connection types connector M12 type cylindrical threaded housing length 75 mm short circuit protection yes reverse polarity protection yes output current < 200 mA