• Foot-candle (Fc) range: 40, 400 4000, 40000
  • Lux range: 400, 4000, 40000, 400000
  • Luminous intensity (Candela) calculations
  • LED type: white, red, yellow, green, blue, purple
  • Accuracy: ±3%
  • Measures white, red, yellow, green, blue, and purple LED lights
  • 4000 count display
  • Manually store/recall up to 99 readings
  • Min/Max average
  • Cosine and color corrected measurements
  • Auto power off

What's in the Box

  • Light sensor
  • Protective cover
  • Coiled cable expands to 1.5m
  • 9V battery
  • Hard case


The Extech LT45 LED Light Meter are 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 LT45 measures both white and color LED lights.