... , auto power off auto zero-adjustment unit display LX1332B digital Lux meterFeatures:Display: 3 ½ digits, big LCD, max display 1999.Wide ... range: from 0.1 Lux to 200,000 Lux.Accurate test, fast response, and auto zero-adjustment ... .5%f.sReading2000-20,000 Lux≤10,000 Lux: ±4% rdg ± 0.5% f.s ≥10,000 Lux: ±5% rdg ± 10.10×reading20 ...