... , big LCD, max display 1999.Wide range: from 0.1 Lux to 200,000 Lux.Accurate test, fast response, and auto zero-adjustment ... RangeAccuracyResult0-200 Lux±4% rdg ± 0.5%f.sReading200-2000 Lux±4% rdg ± 0.5%f.sReading2000-20,000 Lux≤10,000 Lux: ±4% rdg ± 0.5 ... % f.s ≥10,000 Lux: ±5% rdg ...