Digital Lux/Light Level Meter 0~30000 Lux Luminometer Illuminance Meter, FTC with Max Min Hold 2 Parameters Measurement Large Display Range : 0 ~ 30000 Lux / 0 ~ 2788.0 ftc with2 Parameter displays, Lux(lm/m2) and foot candle (lm/ft2) 1Lux (0~30000Lux) / 0.1ftc (0~2788.0ftc) resolution,4% +50 digits accuracyFunction and Min & Max readings function High Accuracy and rapid response (Sample Rate of 2 time /sec) with over range indication, backlight,Data Hold and Min & Max readings functions Low power consumption and compact whichmakes it convenient, portable, easy to use and precise readings Measure and optimize environmental light levels in a wide range of environments, including office buildings, manufacturing plants and warehouses, university campuses, schools, hospitals, etc. Measure white LED lighting, fluorescent, metal halide, high pressure sodium and incandescent  up to 30000 Lux or 2788.0 ftc.