Ultrak 830 Heat Index StopwatchStandard thermometers measure the actual temperature, but not the heat index - how hot it feels taking humidity into account. The Ultrak 830 Heat Index Stopwatch accurately measures heat index - as well as having full stopwatch functionality - to get the most accurate temperature measurement possible.
Provides accurate readings of: Temperature, humidity, heat index and dew point. 30 dual split recallable memory. Tracks up to 10 hours and to the 1/100th of a second. Programmable countdown timers. Auto repeat functionality. Time and calendar functionality. Programmable alarm. LED backlight. Primarily solar powered, but also a Lithium battery backup power source.