wide range to 20,000 foot candles or lux with high resolution to 0.01 fc/lux relative mode indicates change in light levels peak mode captures highest reading remote light seor on 12/ (305mm) coiled cable - expandable to 24/ (609mm) utilizes precision photo diode and color correction filter cosine and color corrected measurements high accuracy of ±(5% reading + 0.5%fs) mimax and data hold large lcd display with analog bar graph backlight for readings in low light levels included accessories 1 - 9v battery 1 - light seor w/protective cover 1 - protective holster 本产品的加工定制是否，类型是数字式照度计，品牌是extech/华仪，型号是lt300