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LS-S50ML Photo Reflective Sensor

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The LS-S50ML has been replaced by the new and improved LS-S50MLR. Please click here to view the new model

LS-S50MLR and LS-S50MLR-DT311 Laser Sensor-Color Contrast

LS-S50ML is a laser sensor that can be taught to recognize difference in colors. It is a class 1 red laser with switching frequency of 1.5 KHZ. Contained in a metal housing with 6 ft of cable, which can be utilized for different operations including stroboscopes, counters and panel tachometers. It includes a trimmer potentiometer that is located on the side for minimum and optimum sensitivity adjustments. Can be used in normally closed or normally open operation, NPN type of output, with a yellow LED for signal indication and a green LED for power.


  • Laser sensor with NPN / PNP (NO, NC) outputs
  • 1.5 kHz frequency
  • LED indication
  • 6' (1.8 m) with quick disconnect connection
  • NEMA 6 (IP67) rating


Sensing Range25 - 400 mm
Sensing HeadStraight
OutputNPN normally open, NPN normally closed, PNP normally open, PNP normally closed
Load Current200 mA max.
Voltage Drop< / = 2.5 VDC
Short Circuit and Overload ProtectionYes
Reverse Polarity ProtectionYes
Supply Voltage10 - 30 VDC
Voltage Ripple10%
LED IndicatorYes (2)
Current Consumption< = 30 mA
Operating ModeLight on / Dark on
Response Time< = 1.0 ms
Switching Frequency500 Hz
StandardEN 60947-5-2
Protection (IEC)IP67
Light Spot Size~0.5 mm at range of 170 mm
Ambient Light Resistance< = 30,000 Lux
Working Temperature-13 to 158 °F
Storage Temperature-22 to 158 °F
Light SourceVisible red laser 660 nm
Electrical ConnectionQuick disconnect
Housing MaterialNickel-plated brass
Weight2.1 oz


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Lead Time Varies, Please contact us for availability.