Extech HW30


Digital Stopwatch, Relative Humidity

HW30 44646
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ItemDigital Stopwatch
Timing RangeCount up to 9 hr., 59 min., 59 sec.
Accuracy+/-5 Seconds per Day
Display2-line LCD
Elapsed TimeYes
Split TimeYes
Calendar DisplayAlarm clock, hourly chime, calendar
12/24 Hour Clock OperationYes
Countdown TimerYes
Lap Counter99
Memory Recall30 lap/split memory
FeaturesTemperature, Humidity, Heat Index
Temp. Range14 to 122 F
Battery TypeCR2032
Includes Battery, 39" Neck Strap, Instructions
Manufacturers Warranty Length1 year
Weight 0.200000


Digital Stopwatch, Count up to 9 hr., 59 min., 59 sec. Timing Range, Accuracy +/-5 Seconds per Day, 2-line LCD Display, Elapsed Time Yes, Split Time Yes, Calendar Display Alarm clock, hourly chime, calendar, 12/24 Hour Clock Operation Yes, Yes Countdown Timer, 99 Lap Counter, 30 lap/split memory Memory Recall, Features Temperature, Humidity, Heat Index, Temp. Range 14 to 122 F, Battery Type CR2032, Includes Battery, 39 In. Neck Strap, Instructions

Elapsed Time (Max.)
  • Measures the total amount of time between the start and finish of an event.
  • Split Time
  • Allows time to be taken at different intervals of an overall race or test11.
  • 12/24 Hr. Clock Operation
  • Displays conventional and military time.
  • Digital Stopwatches
  • Countdown Timer
  • All models feature elapsed time, split time, calendar display, 12/24-hr. clock operation, and alarm. Each includes lanyard and battery.
  • Counts down from a preset start point.
  • Lap Counter
  • Tracks the number of laps completed.
  • Memory Recall
  • Allows multiple lap times to be stored for future review.
  • Temperature/Humidity/Heat Index
  • Displays relative humidity, ambient temperature (in F or C), and calculated heat index.

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