Range: 0~20000FC/0~200000 Lux 1LUX/1FC is the resolution. Precision: ±(3%+5Lux) (using incandescent lamps at 2854°K) ±(6%+5Lux) others Characteristics of the cosine angle deviation: 30°(±2%); 60°(±6%); 80°(±25%) Range of spectrum: 320–730 nm enclosed in a colored box