Ordering Code - NPN Light  D31C-18DRFO-50-NL-2S Ordering Code - PNP Light  D31C-18DRFO-50-PL-2S Ordering Code - NPN Dark  D31C-18DRFO-50-ND-2S Ordering Code - PNP Dark  D31C-18DRFO-50-PD-2S Nominal Sensing Distance, Sn  50mm + 10% Minimum Target Size  50 x 50mm, white paper of minimum 90% reflectance Hysteresis  < 20% of Sn Ambient Temperature Range   0 to 500C Ambient Light safety Level  10,000 lux Function Display  Red LED indicates output status Supply Voltage  10-30VDC Supply Voltage Ripple  < 10% peak-to-peak No-load current  < 30mA Rated Operational Current, Ie  <200mA resistive Voltage Drop at Ie  < 1.5V Distance Adjustment  Via single-turn potentiometer Maximum Switching Frequency  250 Hz Protections  Reverse polarity, Short circuit Housing Material  Nickel-plated Brass Housing Size  M18 x 1 x 105mm Type of Fibre Optic Cable  Polymer Fibre, Polyethylene Sheated Least bending radius of fibre optic cable  22 mm Sensing Head Size  M6 x 1 x 18mm Grade of Protection  IP63 Cable - Electrical  3 x 0.22mm2, 2m long, PVC Cable - Fibre Optic  2 x 2.2mm sheath diameter, 1m long end-to-end Connection Diagrams