capability to measure light intensities accurately across a broad range,making it a vital tool in where light quality and intensity directly impact biological processes. Repeatability: ±1 μmol/m²/sec Measurement Range: 0-4000 μmol/m²/sec Display Resolution: 0.1 μmol/m2/sec (0-999); 1 μmol/m²/sec (1000-4000) Cut-On Wavelength: 400 ±10nm Cut-Off Wavelength: 700 ±10nm Data logging function: record up to 100 groups of data Operating Environment 32°F to 122°F (0°C to 50°C); 0-95%,non-condensing Storage Environment -4°F to 140°F (-20°C to 60°C);0-95%,non-condensing Please note: the physical slightly color difference or difference,does not affect the use,please do not mind,thank you! Colour:Photo Color Material:Plastic Package Contents: 1x PAR Meter(With 2 AAA batteries) 1x English manual 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.