... -208 Datalogging 3 in 1 UVA Light Meter FEATURES: - 3 3/4 digits LCD with backlit maximum reading 3999. - 3 in 1 light sensor design ... the sun and read the irradiance in Watts/m2 or Btu/ft2.h. - It's great for those ... h Resolution0.01uW,0.1uW,1uW,0.01mW0.01,0.1,1,10,100 Lux0.01,0.1,1,10 Foot-candel0.01,0.1,1 ... W/m2.01,0.1,1 Btu/ft2.h Accuracy +/-3% +/-3% ...