Compact Light Meter, REED LM-81LX 


Light Meters

REED Instruments offers a broad selection of digital light meters. REED light meters are used every day in various applications including: to ensure work environments meet OSHA standards, to determine optimum light levels for a film scene or photography, and during the verification process of new lighting system installations on construction projects. Whether you’re looking for a compact meter for basic light measurement applications or you require a system for long-term continuous monitoring, REED Instruments has a light meter to meet your needs.

All REED digital light meters are covered by a standard 1 year manufacturer’s warranty.

Autoranging light meter measures up to 2,000 Fc / 20,000 Lux.

REED LM-81LX Offers

This compact light meter is capable of taking Footcandle (Fc) and Lux measurements. The LM-81LX is an autoranging instrument that keeps track of minimum and maximum readings and features both a data hold function and zero adjustment button.


  • Easy to operate, compact design
  • 5-digit LCD display
  • Autoranging
  • User selectable Lux / Footcandle measurements
  • Min/Max and data hold functions
  • Zero adjustment button
  • Over range and low battery indicators

REED LM-81LX Specifications

Measuring Ranges Lux: 0 to 20,000
Fc: 0 to 2,000
Accuracy ±(5% rdg.+ 8 dgt)
Resolution Lux: 1, 10
Fc: 0.1, 1
Response Time <1 sec.
Sensor Type Photo diode & color correction filter
Autoranging Yes
Display 5-digit LCD
Data Hold Yes
Min Yes
Max Yes
Auto Zero Yes
Overrange Indicator Yes
Sampling Rate 1 time/sec.
Internal Memory Yes
Auto Shut-off Yes (after 10 mins)
Low Battery Indicator Yes
Power Supply 9V battery
Product Certifications CE
Operating Temperature 32 to 122°F (0 to 50°C)
Storage Temperature 14 to 140°F (-10 to 60°C)
Operating Humidity Range 10-80%
Dimensions 6.1 x 2.4 x 1.3″ (156 x 60 x 33mm)
Weight 5.6 oz (160g)

Ideal Applications for the REED LM-81LX

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

Included with the REED LM-81LX

  • Light Meter
  • Wrist Strap
  • Battery

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