light source pulsed infrared diode width / diameter 18 mm reverse polarity protection yes current consumption max. (no load) 40 mA nominal range Sn 20 m current consumption typ. 30 mA actual range Sb 16 m voltage supply range +Vs 10 ... 30 VDC wave length 880 nm emitter / receiver emitter height / length 67 mm operating temperature -25 ... +55 °C type cylindrical threaded protection class IP 67 type through beam sensor manufacter SKU FSAM 18D9651/S14 housing material brass nickel plated / PC front (optics) PC connection types connector M12 4 pin