•Display:LCD display,4 digit LCD reading
•Measuring Range:2000W/m2,634Btu/(ft2 * h)
•Resolution:0.1W/m2,1Btu/(ft2*h)
•Overrange Display:LCD will show "OL" symbol
•Spectral Response:400~1000nm
•Accuracy:Typically within ±10 W/m2 [±3 Btu/(ft2 x h)] or ±5%, whichever is the greatest in sunlight;Additional temperature induced error ±0.38 W/m2/℃ [±0.12 Btu / (ft2 x h)/℃] from 25℃
•Angular Accuracy:Cosine corrected <5% for angles < 60°
•Drift:< ±2% per year
•Sampling Rate:1 times / sec
•Photo Detector:One silicon photovoltaic detector
•Manual Data Memory Capacity:99 sets
•Auto Data Memory Capacity:microSD CARD 2GB
•Operating Temp/Humidity:0 to 50℃(32 to 122℉) / 0% to 80% RH
•Power Source:6 pcs 1.5V size AAA battery