manufacter SKU IFFM 20N1501/S35L reverse polarity protection yes protection class IP 67 short circuit protection yes voltage drop Vd < 3 VDC operating temperature -25 ... +75 °C housing material brass nickel plated voltage supply range +Vs 10 ... 50 VDC output current < 200 mA current consumption max. (no load) 10 mA IFFM 20N1501/S35L dimension 20 mm mounting type flush hysteresis 3 ... 20 % of Sr connection types connector M8 housing length 32 mm output circuit NPN make function (NO) material (sensing face) PBT output indicator 4 port LED red nominal sensing distance Sn 5 mm switching frequency < 1 kHz type rectangular