... USB, Datalonging:45,000 TM-208 Datalogging 3 in 1 UVA Light Meter FEATURES: - 3 3/4 digits ... . Solar Power Features: - The accuracy is +/-3% at 1,000 Watts/m2 . - Solar power research. - Physics and ... - Measuring intensities of illumination in unit of Lux or Foot-candle. - Silicon photodiode and filter. Cosine angular corrected. ... 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/ ...