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Extech LT40 - LED Light Meter
Extech LT40 - LED Light Meter
Our Price: $127.99

Product Code: EXT-LT40


Measure the Illuminance of White LED Lights

The LT40 LED light meter is useful for measuring and optimizing environmental light levels in a wide range of environments, including office buildings, manufacturing plants and warehouses, university campuses, schools, hospitals, and many other locations. OSHA regulates workplace lighting because illumination must be adequate for assigned tasks, and light meters are used to verify regulatory compliance, as well as state and local public safety codes and ordinances. Use of LED lighting is on the rise because it is more efficient to operate, it emits stable, high quality illumination, and the technology is dropping in price. Besides LED lighting, the LT40 can measure standard light sources fluorescent, metal halide, high pressure sodium and incandescent up to 400,000 lux (40,000 Fc). The LT40 comes with a built-in sensor with protective cover, 2 AAA batteries, storage pouch, and user manual.


  • Measure White LED and Standard Lighting in Lux or Foot-Candle (Fc) units
  • Built in sensor with protective cover
  • 4000 count LCD display
  • Cosine and color corrected measurements
  • Min/Max Average and Auto Power Off
  • Complete with 2 AAA batteries and pouch


Foot-Candle (FC) Range
40, 400, 4000, 40000
LUX Range
400, 4000, 40000, 400000
LED Type
Basic Accuracy
Dimensions5.2 x 1.9 x 1" (133 x 48 x 23mm)
Weight8.8oz (250g)

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Manufacturers > Extech / Flir