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 mol or m or sec Measurement Range: 0-4000 mol or m or sec Display Resolution: 0.1 mol or m2 or sec (0-999) 1 mol or m or 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 32F to 122F (0C to 50C) 0-95 percent ,non-condensing Storage Environment -4F to 140F (-20C to 60C) 0-95 percent ,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.