Please note: the physical slightly color difference or difference, does not affect the use, please do not mind, thank you!capability to measure light intensities accurately across a broad range, making it a vital tool in various fields where light quality and intensity directly impact biological processes.ensures that the PAR meter's sensor is completely protected from dust and can withstand continuous immersion in water.Accurate light measurement is essential in studying natural ecosystems, understanding how changes in light conditions affect plant communities, and monitoring the health of habitats.PPFD MeasurementRepeatability: ±1 μmol/m²/secMeasurement Range: 0~4000 μmol/m²/secDisplay Resolution: 0.1 μmol/m2/sec (0~999); 1 μmol/m²/sec (1000~4000)Cut-On Wavelength: 400 ±10nmCut-Off Wavelength: 700 ±10nmData logging function: record up to 100 groups of dataOperating Environment32°F to 122°F (0°C to 50°C); 0~95%, non-condensingStorage Environment-4°F to 140°F (-20°C to 60°C); 0~95%, non-condensingMaterial: plasticcolour: As shownPackage Contents:1 x PAR Meter1 x English manualOnly 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.