... This electronics tool can detect the brightness (Lux level) of any environments in terms such as ... 000 Lux : ± (5% + 2d)2,000 ~ 19,990 Lux : ± (5% + 2d)20,000 ~ 50,000 Lux : ± (5% + 2d)Resolution :0 ~ 2,000 Lux.: 1 Lux2,000 ~ 19,990 Lux : 10 Lux20,000 ... ~ 50,000 Lux ...