manufacter SKU IFRM 18N3701/S35L material (sensing face) PBT mounting type quasi-flush short circuit protection yes type cylindrical threaded voltage supply range +Vs 10 ... 50 VDC protection class IP 67 hysteresis 3 ... 25 % of Sr output current < 200 mA operating temperature -25 ... +75 °C housing length 50 mm switching frequency < 500 Hz output indicator 4 port LED red nominal sensing distance Sn 8 mm reverse polarity protection yes voltage drop Vd < 3 VDC output circuit NPN break function (NC) current consumption max. (no load) 10 mA IFRM 18N3701/S35L dimension 18 mm connection types connector M8 housing material brass nickel plated