LS-S50ML Photo Reflective Sensor

LS-S50ML Photo Reflective SensorLS-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


Model LS-S50ML
Sensing Range 25 – 400 mm
Sensing Head Straight
Output NPN normally open
NPN normally closed
PNP normally open
PNP normally closed
Load Current 200 mA max.
Voltage Drop < / = 2.5 VDC
Short Circuit and Overload Protection Yes
Reverse Polarity Protection Yes
Supply Voltage 10 – 30 VDC
Voltage Ripple 10%
LED Indicator Yes (2)
Current Consumption < = 30 mA
Operating Mode Light on / Dark on
Response Time < = 1.0 ms
Switching Frequency 500 Hz
Standard EN 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° F to 158° F
Storage Temperature -22° F to 158° F
Housing Material Nickel-plated brass
Weight 2.1 oz
Light Source Visible red laser 660 nm
Electrical Connection Quick disconnect

Ordering Details

LS-S50MLR 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

Literature Download:

LS-S50ML Manual