💡 Illuminate your workspace with precision and ease — don’t get left in the dark!
The Extech LT40 LED Light Meter is a compact, battery-powered device delivering high-accuracy light measurements (±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.
| 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 |
| Country of origin | Taiwan |
| Customer Reviews | 4.5 4.5 out of 5 stars (164) |
| Customer reviews | 4.5 4.5 out of 5 stars (164) |
| 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 |
K**.
Great meter. Seems super accurate, and quality. The cap that covers the light sensor always reads 0 and calibrates every time you turn it on. I use it for testing light intensity from my grow lights in a grow tent. I found it would have been much easier to read the lcd screen if the sensor was separated from the main module/screen. My grow plants are very close to the grow light so I end up barely being able to view the screen and the light is blinding that close so it’s hard to even read the screen if I can view it. A separated sensor just gives you more options for reading, but I understand it would be less portable.
A**.
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 ....
C**N
Strumento di misura dedicato per luce emessa da sorgente a led, molto valido, risulta affidabile.
H**2
Das Luxmeter mit dem beeindruckenden Meßbereich läßt sich einfach bedienen und ermöglicht schnelle Messungen der Helligkeit. Mit der Bedienung und Verarbeitungsqualität bin ich sehr zufrieden. Die angegebene Meßgenauigkeit bei weißen LED's ist für den Hausgebrauch sehr gut. Glühlampen sind nicht spezifiziert, erscheinen mir aber im optischen Vergleich genau genug gemessen zu werden. Ideal zum Vergleichen verschiedener Leuchtmittel. Durch die unterschiedlichen Abstrahlwinkel von LED- und Glühlampen in der jeweiligen Leuchte sind die angegebenen Lumen nur bedingt aussagekräftig. So kann ich Helligkeiten vergleichen, wo es mir darauf ankommt.
A**D
Sturdy and reliable little light meter. Has become my reference light meter. Switches off automatically after 12 seconds but you can override this by pushing on the on/off button for 5 seconds. Automatic ranging very handy. Does not remember your preferences like in my case I am interested in the maximum value during a session so I have to remember to push the max button each time. Struggles in low light less than 5 lux due to the smallness of the sensor, so you cannot measure moon light.
Trustpilot
1 month ago
2 weeks ago