The SD200-NIST is a 3-Channel Temperature Datalogger. Records data on an SD card in Excel format. Selectable data sampling rate of 5, 10, 30, 60, 120, 300, 600 seconds or Automatic. Complete with six AAA batteries, 2G SD card, universal AC Adaptor, three Type-K bead wire temperature probes and mounting bracket. Includes certificate traceable to NIST.