--- product_id: 283495370 title: "LT40 LED Light Meter" brand: "extech" price: "930 zΕ‚" currency: PLN in_stock: true reviews_count: 5 category: "Extech" url: https://www.desertcart.pl/products/283495370-lt40-led-light-meter store_origin: PL region: Poland --- # USB interface for seamless data transfer Selectable sampling rates from 1s to 24h 2 AAA batteries included LT40 LED Light Meter **Brand:** extech **Price:** 930 zΕ‚ **Availability:** βœ… In Stock ## Summary > πŸ’‘ Illuminate your workspace with precision and ease β€” don’t get left in the dark! ## Quick Answers - **What is this?** LT40 LED Light Meter by extech - **How much does it cost?** 930 zΕ‚ with free shipping - **Is it available?** Yes, in stock and ready to ship - **Where can I buy it?** [www.desertcart.pl](https://www.desertcart.pl/products/283495370-lt40-led-light-meter) ## Best For - extech enthusiasts ## Why This Product - Trusted extech brand quality - Free international shipping included - Worldwide delivery with tracking - 15-day hassle-free returns ## Key Features - β€’ **Built for the Field:** Compact, lightweight (140g) and durable ABS design with included carrying case - β€’ **Customizable Sampling:** Choose data intervals from 1 second to 24 hours to fit any project timeline - β€’ **Plug & Play Data Mastery:** USB connectivity lets you effortlessly download and analyze data on Windows - β€’ **Clear, Informative Display:** LCD shows current, min/max readings and alarm status for instant insights - β€’ **Precision at Your Fingertips:** High accuracy Β±0.5% ensures reliable light measurements every time ## Overview The Extech LT40 LED Light Meter is a compact, battery-powered device delivering high-accuracy light measurements (Β±0.5%) with a versatile LCD display. Featuring USB connectivity and selectable data sampling rates from 1 second to 24 hours, it integrates seamlessly with Windows software for advanced analysis. Lightweight and durable, it’s designed for professionals needing reliable, on-the-go light monitoring. ## Description Extech Basic Accuracy 40-40,000 FC LED Light Meter. Review: The only lihgt meter with all that we we're looking for. We love the options and different light bulb settings that are programmed into this meter. Review: For the price, works great. Purchased this for use in acquiring night light meter readings on roadways. It allows for lux or foot candle measurements. The instruction manual covers the quirky min/max average function. Otherwise, it did a great job on the jobsite. The included bag provides for good storage and the device is sturdy and works good in a commercial environment. The only issue is there is no back light, which made night readings a little difficult. The fact that the light meter was integrated into the device meant there was no additional wires to manage. ## Features - USB interface for easy setup and data download - Selectable data sampling rates from 1 second to 24 hours - LCD displays current readings, min/max and alarm status - Includes Windows 2000, XP and Vista compatible analysis software ## Technical Specifications | Specification | Value | |---------------|-------| | ASIN | B00FF3X34M | | ASIN | B00FF3X34M | | Batteries | 2 AAA batteries required. (included) | | Batteries | 2 AAA batteries required. (included) | | Batteries Included? | Yes | | Batteries Required? | Yes | | Battery Cell Type | Alkaline | | Color | White | | Customer Reviews | 4.4 4.4 out of 5 stars (196) | | Customer reviews | 4.4 4.4 out of 5 stars (196) | | Date First Available | 1 January 2024 | | Date First Available | 1 January 2024 | | Display Style | Digital | | Included components | Extech LT40 LED Light Meter | | Is Discontinued By Manufacturer | No | | Item Package Quantity | 1 | | Item Weight | 140 g | | Item model number | LT40 | | Item model number | LT40 | | Manufacturer | Extech | | Manufacturer | Extech | | Material | ABS | | Measurement Accuracy | +/-0.5% | | Number Of Pieces | 1 | | Part number | LT40 | | Pattern | Thermometer | | Power source type | Battery Powered | | Product Dimensions | 13.46 x 4.83 x 0.51 cm; 140 g | | Product Dimensions | 13.46 x 4.83 x 0.51 cm; 140 g | | Special Features | High Accuracy | | Specification met | CE | | Style | LT40 | ## Product Details - **Age range (description):** Adult - **Brand:** Extech - **Colour:** White - **Included components:** Extech LT40 LED Light Meter - **Special features:** High Accuracy ## Images ![LT40 LED Light Meter - Image 1](https://m.media-amazon.com/images/I/81stFVFgFmL.jpg) ## Available Options This product comes in different **Style** options. ## Questions & Answers **Q: Does this item come with calibration certificate?** A: Hello Antonio - there isn't a calibration certificate. Based on the various tests I've done the results make sense and the machine is highly responsive. This isn't what I would regard as a precision instrument, but for my purposes g it worked fine. **Q: Does this product come with a warranty?** A: Hello, Thanks for your question, yes, the meter has a 2-year warranty, If you have any questions, please feel free to contact our tech support line at 866-477-3687 option 3 **Q: With the lt45 what light source setting should be used with fluorescent and sodium lights as the manual only lists incandescent and led's?...** A: Hi, thanks for your question, there are 10 light source selections (L0 – L9) each having a unique calibration correction factor (multiplier). See the Light Source list below. The multipliers for locations L0 through L6 are fixed for the lighting types listed. Locations L7 through L9 are extra locations that the user can customize (with a multiplier from 0.001 to 1.999). L0: Standard incandescent light source L1: LED white daylight L2: LED AMBER (YELLOW) light L3: LED GREEN light L4: LED RED light L5: LED BLUE light L6: Not used L7~L9: Programmable User Custom Locations (preset to 1.00) if you have any questions, feel free to contact our technical support line at 866-477-3687 option 3 **Q: Does this perform well in very bright conditions ( very sunny conditions) and in now light conditions?** A: I feel that the Extech LT40 LED does respond fairly well in very bright conditions. As I see it, the meter is designed to read environmental conditions, such as light coming into a building or space, or even on the exterior. If you need to read just the solar conditions (visible light) in an unobstructed open space or area there are better, but often higher priced, meters for that purpose. Nick M ## Customer Reviews ### ⭐⭐⭐⭐⭐ Review *by A***R on 19 November 2017* The only lihgt meter with all that we we're looking for. We love the options and different light bulb settings that are programmed into this meter. ### ⭐⭐⭐⭐⭐ Review *by D***R on 13 September 2015* For the price, works great. Purchased this for use in acquiring night light meter readings on roadways. It allows for lux or foot candle measurements. The instruction manual covers the quirky min/max average function. Otherwise, it did a great job on the jobsite. The included bag provides for good storage and the device is sturdy and works good in a commercial environment. The only issue is there is no back light, which made night readings a little difficult. The fact that the light meter was integrated into the device meant there was no additional wires to manage. ### ⭐⭐⭐⭐⭐ Review *by A***. on 8 December 2022* A great product at an incredible price....might have to wait awhile to find it at the sale price again...A very good LED light meter .... ## Frequently Bought Together - Extech LT40 LED Light Meter - Extech LT300 Light Meter - Leica Geosystems DISTO D2 New 330ft Laser Distance Measure with Bluetooth 4.0, Black/Red, 1.7 x 1 x 4.6 inches --- ## Why Shop on Desertcart? - πŸ›’ **Trusted by 1.3+ Million Shoppers** β€” Serving international shoppers since 2016 - 🌍 **Shop Globally** β€” Access 737+ million products across 21 categories - πŸ’° **No Hidden Fees** β€” All customs, duties, and taxes included in the price - πŸ”„ **15-Day Free Returns** β€” Hassle-free returns (30 days for PRO members) - πŸ”’ **Secure Payments** β€” Trusted payment options with buyer protection - ⭐ **TrustPilot Rated 4.5/5** β€” Based on 8,000+ happy customer reviews **Shop now:** [https://www.desertcart.pl/products/283495370-lt40-led-light-meter](https://www.desertcart.pl/products/283495370-lt40-led-light-meter) --- *Product available on Desertcart Poland* *Store origin: PL* *Last updated: 2026-04-22*