$40.95
  • Accurately calculates temperature, humidity, heat index and dew point
  • 30 dual split recallable memory
  • Measures to 10 hours with 1/100 second resolution
  • Presettable countdown timer with auto repeat function
  • Time, calendar and alarm
  • LED backlight
  • Solar powered with back-up lithium battery
  • Water resistant
  • Five-year warranty
  • Ultrak 830 Instructions