Can you give me a calibration certificate with this unit?

LT300 version with NIST costs $289.00 in our valuetesters store. There is a two week lead time, as each unit needs to be calibrated manually.

What is the lowest fc reading this unit will take? Will it measure as low as 0.02 fc?

We have used this device on almost a daily basis since we examine potential customer sites for our lighting products. We found that the greatest consistent resolution you can get .05 increments reliably as compared to other like devices in the same setting. A good product in our opinion.

what is the conversion formula for lux to PPFD for this unit?

Multiply the Lux by the conversion factor to get PPFD. For example, full sunlight is 108,000 Lux or 2000 µmol m-2 s-1 (108,000 ∗ 0.0185).

I can post the calibration certificate?

I think the question needs to be directed to Extech. I'd be interested in their answer.

Extech Lt300 Light Meter | Desertcart Spain

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Fully operational. Shipping worldwide, on schedule.Customs & duties included in the price

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€ 524.12

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Sold byAmazon SpainDelivered byDesertcartCustomer service byDesertcartReturns14 days · 30 with PRO

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Description

💡 Illuminate your space with confidence — never miss the perfect light!

SMART DATA CONTROL - Min/Max, data hold, and zero adjustment let you capture and compare lighting metrics effortlessly.
PORTABLE POWERHOUSE - Lightweight, durable design with protective sensor cover and holster for on-the-go professionals.
SENSOR TECH MASTERY - Cosine and color-corrected sensor guarantees reliable results across all light types—daylight, LED, fluorescent.
EFFORTLESS VISIBILITY - Backlit LCD with analog bar graph ensures clear readings even in dim or challenging environments.
PRECISION LIGHTING INSIGHTS - Measure up to 40,000 lux with pinpoint accuracy for flawless workspace and studio lighting.

The Extech LT300 Light Meter delivers professional-grade light measurement up to 40,000 lux with advanced sensor technology and user-friendly features like a large backlit display and data hold. Its portable, durable design makes it an essential tool for managers, photographers, and safety inspectors aiming to optimize lighting conditions and ensure compliance with workplace standards.

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Desertcart is an international e-commerce platform operating since 2014. We securely process thousands of orders globally each day. Every product goes through our quality verification process before delivery, and we provide end-to-end order tracking, 24/7 customer support, and a comprehensive returns policy to ensure a safe shopping experience.

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Our prices include the product cost, international shipping, import duties, customs clearance, and local delivery charges. We handle all customs and import procedures, ensuring there are no hidden fees upon delivery. PRO members receive additional benefits including free shipping.

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€ 524.12

Duties & taxes included

In stock

Sold byAmazon SpainDelivered byDesertcartCustomer service byDesertcartReturns14 days · 30 with PRO

Buyer Protection · Full refund if your order doesn't arrive as described.

Desertcart purchases this item on your behalf and handles shipping, customs, and support to Spain.

Secure transaction

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Join PRO →

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TrustScore 4.5 | 7,300+ reviews

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Extech LT300 Light Meter

Description

Specifications

Common Questions