Laser Distance Meter LM-40




UNI-T LM-40 is a Laser Distance Meter. It can be used in interior/exterior design, construction, factory supervision, engineering inspection, traffic accident evidence gathering, real estate development, fire assessment, and more.


  • Ergonomic exterior, comfortable handling
  • Millimeter accuracy
  • Large, multiple angle HD display
  • Quick, auto calculation with real-time readout
  • Physical leveler
  • Multiple functions: Max/Min/continuous measurement, displacement calculation, data storage, and more
  • Auto power off after 3 minutes without operation


  • Display type: EBTN
  • Display size: 2.0-inches
  • Range: 40m
  • Min. display unit: 0.001m
  • Measurement units: m/ft/in
  • Measurement basis: front/rear
  • Accuracy: ±(2mm+5 x 10-5D)
  • Laser class: 2
  • Laser type: 630~670nm, ﹤1mW
  • Single measurement
  • Continuous measurement
  • Max/Min/Area
  • Volume
  • Pythagoras
  • Add/Subtract
  • Data storage: 20 groups
  • Auto power off: 3 minutes without operation
  • Auto laser off: 30s without operation
  • Auto backlight off: 10s without operation
  • Audio indication
  • Battery status display
  • Storage temperature: -20℃~70℃
  • Operating temperature: 0℃~40℃
  • Additional information
  • Gross weight: 110 g
  • Manufacturer part number: LM-40


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