manufacter SKU IFRM 18N37A4/L output indicator LED red voltage drop Vd < 2 VDC housing length 65 mm connection types cable, 2 m operating temperature -25 ... +75 °C type cylindrical threaded housing material brass nickel plated reverse polarity protection yes current consumption max. (no load) 10 mA output circuit NPN break function (NC) protection class IP 67 mounting type quasi-flush hysteresis 3 ... 20 % of Sr material (sensing face) PBT switching frequency < 500 Hz nominal sensing distance Sn 8 mm voltage supply range +Vs 10 ... 30 VDC IFRM 18N37A4/L dimension 18 mm tightening torque max. 40 Nm output current < 200 mA short circuit protection yes