switching frequency < 2 kHz type cylindrical threaded housing material brass nickel plated reverse polarity protection yes material (sensing face) PBT output indicator LED red nominal sensing distance Sn 4 mm voltage supply range +Vs 10 ... 30 VDC IFRM 12N3701/L dimension 12 mm voltage drop Vd < 2 VDC manufacter SKU IFRM 12N3701/L operating temperature -25 ... +75 °C connection types cable, 2 m current consumption max. (no load) 10 mA short circuit protection yes output circuit NPN break function (NC) mounting type flush output current < 200 mA protection class IP 67 housing length 30,4 mm hysteresis 3 ... 20 % of Sr