This professional 400K lux light meter is an easy-to-use, usable light intensity (lux) meter. Ideal for measuring, comparing, and adjusting lighting levels in your environment, whether at work or at home. It is overflowing with features that any lighting technician should have. It uses photopic spectral sensitivity that closely mimics the response of the human eye to changes in light. Extremely accurate with a rapid response and can store min and max values for easy comparisons. Measurement can be switched between LUX and FC (foot-candles) and a data hold function that can pause the reading All this is output to an easy-to-read backlit LCD. And what's more! included is a carry plastic case with a handle for easy and safe transportation.