Measure PAR (P osynthetically Active Radiation) flux and DLI (Daily Light Integral) Records up to 5 years of data and can export in CSV file Easy to read 30 days of data in the main unit Date and Real-time clock Display,Manual and Automatic power-off function DLI (Daily Light Integral) function, IP65 Waterproof PAR DLI Meter - Optimize Light for Healthier, Higher-Yielding Plants your plants get the perfect amount of light with our PAR DLI Meter. Designed to measure both PAR (P osynthetically Active Radiation) and DLI (Daily Light Integral), this essential tool helps you track the exact light intensity your plants receive throughout the day. Ideal for home , commercial growers, and researchers, it enables precise light management to prevent underexposure or p oinhibition. Give your plants the light they need to -accurately and consistently. Specifications PPFD Measurement: Repeatability: 1mol/m2/sec Measurement Range: 0-5000 mol/m2/sec Display Resolution: 0.01 mol/m2/sec(0-99.99); 0.1 mol/m2/sec(100-999); 1 mol/m2/sec(1000-5000) Measuring Rate: 1 measurement per second Cut-On Wavelength: 40010nm Cut-Off Wavelength: 70010nm Operating Condition: 32-22 (0-50); 0-95%RH, non-condensing Storage Condition: -4-140 (-20-60); 0-95%RH, non-condensing (The product printed words depending on the batch, but this does not affect use) Color:As shown Material:ABS Package Contents: 1 * Digital PAR DLI PPFD Meter kits Only the above package content, other products are not included. Note: Light reflection and different displays may cause the color of the item in the picture a little different from the real thing. The measurement allowed error is +/- 1-3cm.