Use this light meter to gather precision measurements for all your light monitoring requirements. Unit provides cosine and color-correction capabilities along with a datalogger function that date and time stamps, and stores up to 99 readings manually and up to 20 M of readings on an SD card in Excel format for easy transfer to a PC. Meter features an adjustable data sampling rate of 1 to 3600 seconds and provides temperature measurement capabilities with any type J or K thermocouple.