switching frequency < 500 Hz reverse polarity protection yes IFRM 18P1301/L dimension 18 mm current consumption max. (no load) 15 mA material (sensing face) PBT manufacter SKU IFRM 18P1301/L housing length 39 mm voltage drop Vd < 3 VDC short circuit protection yes voltage supply range +Vs 10 ... 30 VDC output indicator LED red output circuit PNP make function (NO) operating temperature -25 ... +75 °C type cylindrical threaded housing material brass nickel plated output current < 200 mA nominal sensing distance Sn 12 mm connection types cable, 2 m protection class IP 67 hysteresis 3 ... 25 % of Sr mounting type non-flush