The SDL400 displays and stores light meter readings in three ranges: 2,000 / 20,000 / 100,000 LUX or Foot candles from the supplied domed light sensor. It automatically ranges light meter measurements and the light sensor spectrum where it meets C.I.E. The SDL400 also displays and logs temperature readings from a connected Type J or Type K thermocouple. Complete with 6 x AA batteries, SD card, hard carrying case and light sensor with protective cover.