• Foot-candle (Fc) range: 40, 400 4000, 40000
  • Lux range: 400, 4000, 40000, 400000
  • LED type: white
  • Basic accuracy ±3%
  • Measure LED and Standard Lighting in Lux or Foot-Candle (Fc) units
  • 4000 count display
  • Min/Max Average
  • Cosine and color corrected measurements
  • Auto Power off


The Extech LT40 LED Light Meter is used for monitoring and optimizing environmental light levels in buildings, schools, and offices. LED lighting is being used more commonly, because they are less expensive, more energy efficient and brighter. The Model LT40 measures the light intensity for white LED lights.

The Extech LT40 ships complete with:

  • Built-in sensor
  • Protective cover
  • 2 AAA batteries
  • Pouch


This product can be used in the following applications:

In Stock

Part Number Price Available
$127.99 3 in stock

Interested in Other Part Numbers?

Other part numbers are available to order but are not currently in stock. Current availability for non-stock parts is "Usually ships in 3-5 business days". Click here to select options