width / diameter 18 mm light source pulsed infrared diode manufacter SKU FSAM 18D9651 nominal range Sn 20 m actual range Sb 16 m height / length 57 mm voltage supply range +Vs 10 ... 30 VDC protection class IP 67 connection types cable 3 pin, 2 m current consumption max. (no load) 40 mA current consumption typ. 30 mA operating temperature -25 ... +55 °C housing material brass nickel plated / PC type through beam sensor wave length 880 nm reverse polarity protection yes emitter / receiver emitter front (optics) PC type cylindrical threaded