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Extech LT300 Light Meter

4.3 4.3 out of 5 stars 224 ratings

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LT300

Purchase options and add-ons

  • Backlight for readings in low light levels
  • Large LCD display with analog bargraph
  • Utilizes precision photo diode and color correction filter
  • Remote light sensor on 12" coiled cable - expandable to 24"
  • Relative and peak modes

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Product details

  • Is Discontinued By Manufacturer ‏ : ‎ No
  • Product Dimensions ‏ : ‎ 3 x 1.57 x 5.9 inches; 7.05 ounces
  • Item model number ‏ : ‎ LT300
  • Batteries ‏ : ‎ 1 Product Specific batteries required. (included)
  • Date First Available ‏ : ‎ February 14, 2007
  • Manufacturer ‏ : ‎ Extech
  • ASIN ‏ : ‎ B000NI69ZY
  • Country of Origin ‏ : ‎ China
  • Customer Reviews:
    4.3 4.3 out of 5 stars 224 ratings

Product Description

The Extech LT300 light meter can determine whether you have adequate illumination to protect workers, students, visitors, patients or attendees of different venues. This handheld instrument measures up to 40, 000 fc (or 400, 000 lux) utilizing a remote light sensor connected via 12 in. Coiled cable (expandable to 24 in.). A prominent LCD readout displays a digital calculation and complementary analog bar graph for quick, reliable assessments. Complete with 9V battery, light sensor with protective cover, protective holster, and soft case. Insufficient lighting can create security risks or result in OSHA crackdowns.

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    Customer reviews

    4.3 out of 5 stars
    4.3 out of 5
    224 global ratings

    Customers say

    Customers like the performance, value, accuracy, ease of use, and quality of the light meter. For example, they mention that it works well, it's accurate, and easy to use. Some appreciate the backlit screen.

    AI-generated from the text of customer reviews

    39 customers mention35 positive4 negative

    Customers like the performance of the light meter. They mention that it works well, has good sensitivity, and is useful in many applications. Some say that the results are very consistent, and the device is a great device for the price. Some customers also mention that the light is able to determine indoor light levels and is regarded as a good QA/QC tool for comparing scientific instruments.

    "...The unit has been working great for several weekends of hiking, and does correctly identify shade/sun conditions...." Read more

    "I used it for my plants 🪴 it seems to work well and is easy to use...." Read more

    "...For me this a very good QA/QC tool for comparing scientific instrument consistency." Read more

    "...This device is very easy to use and understand, and the results are very consistent...." Read more

    20 customers mention20 positive0 negative

    Customers appreciate the value of the precision measuring instrument. They mention that it works perfectly, has decent quality, and is a great buy. Some say that it gives them an inexpensive backup.

    "This is a well made meter with some nice features for a reasonable price. The data logging is good for unattended recording...." Read more

    "Nice inexpensive meter. Agrees with my other units and gives me an inexpensive backup." Read more

    "Works great, sensitive, durable and very affordable...." Read more

    "Inexpensive light meter that is worth the price...." Read more

    17 customers mention17 positive0 negative

    Customers are satisfied with the accuracy of the light meter. They mention it's a good meter that allows them to put actual readings in a job quote for LED lighting retrofits. Customers also appreciate the sensitive light sensor and the carrying case. Overall, customers are happy with their purchase and recommend it to others.

    "...working great for several weekends of hiking, and does correctly identify shade/sun conditions...." Read more

    "Works great, sensitive, durable and very affordable...." Read more

    "...It is extremely accurate, as I periodically test it against another digital meter and a manual needle meter used in photography...." Read more

    "...Seems to be well made and durable. Seems to be quite accurate...." Read more

    14 customers mention14 positive0 negative

    Customers find the precision measuring product easy to use. They mention that the software is very useful and simple to operate. They also say that the product is accurate and works in many applications. Customers also say the product can be communicated with the serial port and controlled from a remote location.

    "I used it for my plants 🪴 it seems to work well and is easy to use...." Read more

    "...This device is very easy to use and understand, and the results are very consistent...." Read more

    "The Extech 401025 was very easy to use right out of the box. It seems to be very accurate so far...." Read more

    "Good setting options and easy to use - only issue is I wish the device had a back light for the screen disability in low light conditions." Read more

    11 customers mention11 positive0 negative

    Customers are satisfied with the quality of the light meter. They mention that it is well-made, rugged, and easy to use. Some say that it fits the bill perfectly and is portable.

    "This is a well made meter with some nice features for a reasonable price. The data logging is good for unattended recording...." Read more

    "Works great, sensitive, durable and very affordable...." Read more

    "...Seems to be well made and durable. Seems to be quite accurate...." Read more

    "...Then again it costs a fraction as much and is portable." Read more

    4 customers mention4 positive0 negative

    Customers find the backlit screen of the precision measuring device to be a great aid, a good tool for lighting development, and useful in night applications.

    "This has been a very good tool for lighting development and we will continue buying and issuing them to sales staff to use as field comparison tools." Read more

    "...The backlit screen is very helpful when trying to take readings in low light levels." Read more

    "Meter works great for the price. Back lit screen is a great aid. Only issue is that meter turns off if left running for a period of time." Read more

    "Great device, very useful in night applications. Useful carrying case and very sensitive light sensor. Accurate reading device." Read more

    4 customers mention4 positive0 negative

    Customers are satisfied with the service provided by the company. They mention that the product works well, is easy to use, and has good service. Some appreciate the quick service and the fast shipping.

    "Fast shipping...works great" Read more

    "...Used professionally. This meter has a great reputation and delivers good service." Read more

    "Works well. Easy to use. Good service." Read more

    "Great buy, with quick service...." Read more

    Poor documentation. Required PC software is Windows-only
    2 Stars
    Poor documentation. Required PC software is Windows-only
    I needed to use this on a Linux computer, and even though it's a simple serial device ("Silicon Labs CP210x UART Bridge"), I can't communicate it because the manual doesn't include info about the serial interface (baud rate at the minimum would be nice...). The manual only points you to use their software, which is Windows only.
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    Top reviews from the United States

    Reviewed in the United States on August 3, 2020
    Style: 401025Verified Purchase
    2 people found this helpful
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    Reviewed in the United States on March 27, 2014
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    4 people found this helpful
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    Reviewed in the United States on August 11, 2022
    Style: 401025Verified Purchase
    Reviewed in the United States on February 26, 2021
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    2 people found this helpful
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    Reviewed in the United States on March 17, 2017
    Style: LT300Verified Purchase
    Reviewed in the United States on September 7, 2013
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    4 people found this helpful
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    Reviewed in the United States on August 27, 2020
    Style: HD450Verified Purchase
    Reviewed in the United States on October 28, 2022
    Style: HD450Verified Purchase
    Customer image
    2.0 out of 5 stars Poor documentation. Required PC software is Windows-only
    Reviewed in the United States on October 28, 2022
    I needed to use this on a Linux computer, and even though it's a simple serial device ("Silicon Labs CP210x UART Bridge"), I can't communicate it because the manual doesn't include info about the serial interface (baud rate at the minimum would be nice...). The manual only points you to use their software, which is Windows only.
    Images in this review
    Customer image
    Customer image
    5 people found this helpful
    Report

    Top reviews from other countries

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    Eva Badillo
    2.0 out of 5 stars Opinión
    Reviewed in Mexico on February 12, 2024
    Style: HD450Verified Purchase
    Francisco
    5.0 out of 5 stars Excelente
    Reviewed in Mexico on August 29, 2023
    Style: LT300Verified Purchase
    Francisco
    5.0 out of 5 stars Práctico
    Reviewed in Mexico on August 30, 2023
    Style: LT505Verified Purchase
    LV
    5.0 out of 5 stars Works well
    Reviewed in Canada on December 10, 2020
    Style: LT300Verified Purchase
    Dorsetman
    5.0 out of 5 stars Useful isntrument
    Reviewed in the United Kingdom on October 7, 2019
    Style: HD450Verified Purchase