EXTECH LT300 Light Meter

The Extech LT300 nist light meter can determine whether you have adequate illumination to protect workers, students, visitors, patients, or attendees of different venues.

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EXTECH LT300 Light Meter

Inadequate illumination might jeopardise security or result in OSHA fines. The Extech LT300 light metre can tell you whether you have enough lighting to protect workers, students, visitors, patients, or attendees at various settings. This handheld device can measure up to 40,000 Fc (or 400,000 Lux) by using a remote light sensor connected by a 12 in. coiled cable (extendable to 24 in.).

A big LCD readout displays a digital computation and an analogue bar graph for quick, accurate assessments. A 9V battery, soft case, protective holster, light sensor with cover, and a 9V battery are included.

To get more information about the Extech LT300 price be in touch with our sales experts. We offer various models of Extech products on the MME website.

EXTECH LT 300 Features

  • Relative mode indicates a change in light levels
  • Peak mode captures the highest reading
  • Remote light sensor on 12″ (30.5cm) coiled cable expandable to 24″ (61cm)
  • Utilizes precision photo diode and color correction filter
  • Cosine and color-corrected measurements
  • Measures up to 40,000Fc/400,000Lux with 0.01 rmax resolution and basic accuracy of ±(5% rdg + 0.5%FS)
  • MIN/MAX feature stores maximum and minimum readings

EXTECH Light Meter LT300 Specifications

  • Fc Range 40,000Fc
  • Lux Range 400,000Lux
  • Max. Resolution 0.01Fc/Lux
  • Basic Accuracy ±5% rdg
  • Cosine & Color Corrected Yes
  • Dimensions/ Weight 5.9×2.95×1.57″ (150x75x40mm/ 7oz (200g)
  • On 12″ (30.5cm) coiled cable – expandable to 24″ (61cm)
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EXTECH meters and testers help you ensure uptime, maximize productivity and verify compliance. Whether used as a component of an effective predictive maintenance program or as a key tool for a rapid response repair team, EXTECH instruments are the meters of choice for professionals who need to solve problems. Extech continues to build brand loyalty and trust among electrical contractors, industrial mechanics, facilities maintenance, HVAC/R technicians, sustainability & safety directors, public works managers, building & restoration contractors, and more. Extech products are backed with a standard full 2-year warranty, and select products up to 3 years, against defects.


Data Sheet


Lux meter
illuminance range(Lux) range/resolution/accuracy

400,000Lux/ 0.01Lux/ ±5% of reading

illuminance range(FC) range/resolution/accuracy

40,000Fc/0.01Fc/±5% of reading

Mechanical and General Specifications

150 × 75 × 40mm


1 × 9V battery