TK499PLUS Professional PAR DLI Light Meter PAR/PPFD & DLI for Plants Measure Photosynthetic Light (400-700nm) for Hydroponics, Greenhouses & Indoor Grow Rooms
In stock
TK499PLUS
Key Features:
✔ Accurate PAR & DLI Measurement – Tracks light intensity (PPFD) and total daily light (DLI) for optimal photosynthesis✔ Long-Term Data Logging – Stores up to 5 years of data and ...
Key Features:
✔ Accurate PAR & DLI Measurement – Tracks light intensity (PPFD) and total daily light (DLI) for optimal photosynthesis
✔ Long-Term Data Logging – Stores up to 5 years of data and exports via CSV file
✔ USB Type-C Connectivity – Easily transfer data to a PC for analysis
✔ 30-Day On-Screen Data Display – Quickly check recent light levels without a computer
✔ Real-Time Clock & Date Display – Timestamped readings for precise tracking
✔ IP65 Waterproof – Durable for use in greenhouses, grow tents, and outdoor gardens
✔ Battery Level Indicator – Never run out of power unexpectedly
✔ Auto/Manual Power-Off – Conserves battery life when not in use
Why Light Monitoring Matters:
PAR (400-700nm) is the spectrum plants use for photosynthesis - too little slows growth, too much causes stress.
DLI measures total daily light energy - critical for adjusting grow lights or sunlight exposure.
Essential for indoor farming, hydroponics, greenhouses, and horticultural research.
Who Needs This Meter?
🌱 Home Gardeners – Perfect light for houseplants, herbs, and seedlings
🌿 Commercial Growers – Maximize crop yields with data-driven lighting
🔬 Plant Scientists & Researchers – Precise light measurement for experiments
💡 LED Grow Light Users – Verify your setup delivers optimal PAR levels
Specifications:
- PPFD Measurement:
- Repeatability: ±1μmol/m2/sec
- Measurement Range: 0~5000 μmol/m2/sec
- Display Resolution: 0.01 μmol/m2/sec(0-99.99); 0.1 μmol/m2/sec(100-999); 1 μmol/m2/sec(1000-5000)
- Measuring Rate: 1 measurement per second
- Cut-On Wavelength: 400±10nm
- Cut-Off Wavelength: 700±10nm
- Operating Condition: 32~22°F (0~50°C); 0-95%RH, non-condensing
- Storage Condition: -4~140°F (-20~60°C); 0-95%RH, non-condensing
- Power Requirements: 2pcs AAA alkaline battery
- Dimension: 115 x 60 x 24 mm
- Weight: 115g / 0.25 pounds (without batteries)
📦 What’s Included?
- 1 x PAR Meter
- 1 x Type-C Cable
- 2 x AAA batteries
- 1 x Soil rod
- 1 x Screwdriver
- English User Guide
Returns Policy
You may return most new, unopened items within 30 days of delivery for a full refund. We'll also pay the return shipping costs if the return is a result of our error (you received an incorrect or defective item, etc.).
You should expect to receive your refund in the same payment form used at the time of purchase within four weeks of giving your package to the return shipper. This time period includes the transit time for us to receive your return from the shipper, the time it takes us to process your return once we receive it, and the time it takes for the refund to be credited to your account.
For more information, please refer to our Return, Refund & Warranty Policy or contact us.
Shipping Policy
We can ship to virtually any address in the world. Note that there are restrictions on some products, and some products cannot be shipped to international destinations.
When you place an order, we will estimate shipping and delivery dates for you based on the availability of your items and the shipping options you choose. Depending on the shipping provider you choose, shipping date estimates may appear on the shipping quotes page.
Please also note that the shipping rates for many items we sell are weight-based. The weight of any such item can be found on its detail page. To reflect the policies of the shipping companies we use, all weights will be rounded up to the next full pound.
For more information, please refer to our Shipping Policy.
Warranty Policy
Most of our items come with 1 year warranty for manufacturer defects. It does not include damage caused by misuse, accidents, abuse, alterations, neglect or other external causes.
The warranty will not extend to consumables (i.e. electrodes, calibration solution, battery, index oil), accessories, cable, compact disk and/or any written document bundled with the item.
For more information, please refer to our Warranty Policy.
