light meter for growing plants TK499PLUS Professional PAR DLI Light Meter PAR/PPFD & DLI for Plants Measure Photosynthetic Light (400-700nm) for Hydroponics, Greenhouses & Indoor

light meter for growing plants TK499PLUS Professional PAR DLI Light Meter PAR/PPFD & DLI for Plants Measure Photosynthetic Light (400-700nm) for Hydroponics, Greenhouses & IndoorKey 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

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