Measurement Photoelectric Laser Sensors

Bulletin 45LMS Laser Measurement Sensors offer an excellent mid- to long-range measurement solution. Available in three ranges, this sensor uses the Time of Flight (ToF) principle and has a relatively small beam spot, even from a distance of 50m.

Popular Resources/Quicklinks
Presence Sensing Brochure Bulletin 45LMS Laser Measurement Sensor with IO-Link Product Profile Bulletin Bulletin 45LMS Laser Measurement Sensor Installation Instructions


  • Incorporates embedded IO-Link communication protocol to help minimize downtime and increase productivity
  • IO-Link enabled sensors offer advanced features and diagnostics including Automatic Device Configuration, multiple profiles, trending, descriptive tags, and device specific parameters
  • Includes diffuse range: 8m (Class 1 laser); 15m (Class 2 laser)
  • Offers retroflective model range: 50m
  • Includes one discrete output (1 x NPN/PNP) and one analog output (1 x 4...20 mA)
  • Accurate to ± 24 mm (± 0.98 in.)
  • Provides fast response time of 10ms
Additional Information
Sensors on IO-Link Can Enable the Connected Enterprise

Watch how smart sensors with IO-Link can enable smart machines for The Connected Enterprise.

IO-Link Technology

IO-Link Technology is a worldwide open-standard protocol that integrates sensors into our Connected Enterprise by connecting the IO-Link enabled device into an IO-Link master module. You can deliver data from the sensor directly into a control system in a very efficient manner. The flexibility of IO-Link capable sensors allows machines to operate more effectively by providing the controller with diagnostics. In addition to product detection, sensors provide detailed and accurate machine health status to improve uptime.

Product Selection


  • CE Marked for all applicable directives
  • c-UL-us Listed
  • IO-Link
  • UL Listed
Looking for Additional Information?

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Resource Publication Number Language
Presence Sensing Brochure SENSOR-BR001
Bulletin 45LMS Laser Measurement Sensor with IO-Link Product Profile 45LMS-PP002
Bulletin Bulletin 45LMS Laser Measurement Sensor Installation Instructions 45LMS-IN001
Laser Measurement Sensor with IO-Link Interface User Manual 45LMS-UM001
Integrated Smart Sensor Solution Quick Reference Guide IOLINK-SP001
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Bulletin 45LMS Laser Measurement Sensors are suitable for long range detection/measurement applications including:

  • Diameter and web control
  • Distance measurement
  • Level monitoring
  • Long standoff distance presence/absence
  • Material position verification
  • Part positioning
  • Stack level measurement
  • Thickness measurement

Product Application Library — View our product application library to discover how customers have applied Allen-Bradley sensing products.