Model: R8140 | UPC: 800837004253

Auto-ranging LED light meter with a detachable and rotatable sensor that allows for one-handed operation.

Datasheet Manual

REED R8140 Offers

This LED Light Meter is capable of measuring popular light sources including white, red, green, yellow, and blue LEDs up to 199,900 Lux (19,990 Fc). The R8140 includes an auto-ranging feature to optimize resolution and keeps track of minimum and maximum readings. This instrument is also capable of measuring standard incandescent light sources.

What’s included with the REED R8140

  • LED Light Meter
  • Detachable Sensor
  • Sensor Cover
  • Hard Carrying Case
  • 2 x AA Batteries


  • Measures ambient light levels of white, red, yellow, green and blue LED light and visible light in Foot-candles or Lux
  • Backlit LCD display
  • Detachable and rotatable light sensor
  • Min/Max and data hold functions
  • Cosine and color corrected measurements
  • User-adjustable parameter for specialized light sources
  • Low battery indicator and auto shut off

Ideal Applications for the REED R8140

  • OSHA work environment compliance
  • Cinematography and photography applications
  • Museum exhibits
  • Lighting system installation
  • Environmental monitoring
  • Interior design projects
  • Industrial applications