output circuit NPN break function (NC) protection class IP 67 reverse polarity protection yes IFRM 12N37X1/L dimension 12 mm voltage supply range +Vs 10 ... 30 VDC connection types cable, 2 m housing material brass nickel plated housing length 30,4 mm mounting type flush manufacter SKU IFRM 12N37X1/L switching frequency < 2 kHz operating temperature Ta -25 ... +65 °C type cylindrical threaded current consumption max. (no load) 10 mA output indicator LED red material (sensing face) PBT marking II 3D Ex tc IIIC T100°C Dc X short circuit protection yes output current < 200 mA voltage drop Vd < 2 VDC nominal sensing distance Sn 4 mm hysteresis 3 ... 20 % of Sr