material (sensing face) LCP switching frequency < 3 kHz hysteresis 2 ... 20 % of Sr manufacter SKU IFRM 04N37A3/PL connection types cable, 2 m housing material stainless steel voltage drop Vd < 2 VDC nominal sensing distance Sn 1,6 mm type cylindrical smooth short circuit protection yes housing length 20 mm voltage supply range +Vs 10 ... 30 VDC IFRM 04N37A3/PL dimension 4 mm protection class IP 67 operating temperature -25 ... +75 °C output indicator LED red current consumption max. (no load) 12 mA output circuit NPN break function (NC) mounting type flush reverse polarity protection yes output current < 100 mA