... Illumination, USB, Datalonging:45,000 TM-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, you can select either one (UV ... 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% (Calibrated to standard incandescent lamp 2856º K) +/-6%( ...