voltage drop Vd < 2 VDC protection class IP 67 voltage supply range +Vs 10 ... 30 VDC reverse polarity protection yes housing length 65 mm short circuit protection yes output indicator LED red material (sensing face) PBT manufacter SKU IFRM 18N17A4/L switching frequency < 500 Hz current consumption max. (no load) 10 mA connection types cable, 2 m tightening torque max. 40 Nm housing material brass nickel plated output circuit NPN make function (NO) output current < 200 mA mounting type quasi-flush operating temperature -25 ... +75 °C nominal sensing distance Sn 8 mm IFRM 18N17A4/L dimension 18 mm hysteresis 3 ... 20 % of Sr type cylindrical threaded