User selectible fc or Lux, autoranging
Chart included with meter provides multiplication factor for true light level measurement of different lighting types such as : Fluorescent, Hg vapor, white halide, daylight, xenon, high and low pressure sodium, etc...
The cal-LIGHT uses a silicon photodiode sensor corrected to measure exactly like the human eye sees. Every cal-LIGHT is certifiably calibrated and recognized by the American National Institute of Standards and Technology.