light source pulsed red LED protection class IP 67 type retro-reflective sensor voltage drop Vd < 1,8 VDC current consumption typ. 22 mA connection types cable 3 pin, 2 m output circuit NPN housing material brass nickel plated / PC type cylindrical threaded manufacter SKU FPAM 18N3151 output function dark operate front (optics) PMMA voltage supply range +Vs 10 ... 30 VDC output current < 200 mA current consumption max. (no load) 35 mA width / diameter 18 mm sensitivity adjustment no wave length 660 nm response time / release time < 1 ms alignment / soiled lens indicator flashing light indicator height / length 57 mm suppression of reciprocal influence yes short circuit protection yes actual range Sb 3,2 m reverse polarity protection yes light indicator LED yellow operating temperature -25 ... +55 °C polarization filter yes nominal range Sn 4 m