Extech HW30 HeatWatch™ Stopwatch

  • Extech HW30 stops, counts and recalls laps.
  • Extech HW30 stores 30 lap times reliably
  • Heat index alarm warns above set threshold
  • Large backlit display shows temp and humidity
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We offer a Price Match Promise! Find an equivalent tester for a cheaper price on a competitor site, and we’ll do our best to match it

Express Delivery & Calibration

Express Delivery is currently unavailable for customers wishing to add calibration to their New Goods order. For more information, visit our Delivery Information page. 

£50.00 (ex VAT)

£60.00 (inc VAT)

Earn 50 points

Usually Ships In 6 to 13 Business Days
  • Extech HW30 stops, counts and recalls laps.
  • Extech HW30 stores 30 lap times reliably
  • Heat index alarm warns above set threshold
  • Large backlit display shows temp and humidity
Free Shipping

Spend over £100 on any new goods order and receive automatic free shipping

Rewards

Points make purchases! For every £1 spent, earn back 1p that can be spent on any future new goods purchase

Our Price Promise

We offer a Price Match Promise! Find an equivalent tester for a cheaper price on a competitor site, and we’ll do our best to match it

Express Delivery & Calibration

Express Delivery is currently unavailable for customers wishing to add calibration to their New Goods order. For more information, visit our Delivery Information page. 

£50.00 (ex VAT)

£60.00 (inc VAT)

Earn 50 points

Usually Ships In 6 to 13 Business Days
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The Extech HW30 fits easily in your palm yet handles much more than time. It measures live temperature and humidity so you know how the day really feels.

Reliable timing when every second counts

First, the Extech HW30 starts, stops and stores up to 30 lap or split results for later study. Then it recalls fastest, slowest and average numbers, helping coaches track gains.

Stay safe in hot conditions

Next, the Extech HW30 reads the air every few seconds and calculates the heat index, an all-important feel-like value. When your preset limit is met it sounds an alarm, so teams pause before risk grows.
Because of these safety and timing tools, the Extech HW30 suits sport, site work and science lessons alike. Its bright back-light, simple four-button face and supplied lanyard keep work flowing even after the sun sets.

Key Features
  • Lightweight ABS housing resists knocks
  • Back-light enables night viewing
  • Simple four-button interface speeds set-up
  • User set heat index alarm shields health
  • 30 lap memory with fastest and average recall
  • Ten hour countdown for warm-ups or rests
  • Switchable 12 or 24 hour time display
  • Temperature and humidity refresh every five seconds
  • Supplied lanyard keeps Extech HW30 within reach
  • Battery installed for instant operation
pdf

The Extech HW30 fits easily in your palm yet handles much more than time. It measures live temperature and humidity so you know how the day really feels.

Reliable timing when every second counts

First, the Extech HW30 starts, stops and stores up to 30 lap or split results for later study. Then it recalls fastest, slowest and average numbers, helping coaches track gains.

Stay safe in hot conditions

Next, the Extech HW30 reads the air every few seconds and calculates the heat index, an all-important feel-like value. When your preset limit is met it sounds an alarm, so teams pause before risk grows.
Because of these safety and timing tools, the Extech HW30 suits sport, site work and science lessons alike. Its bright back-light, simple four-button face and supplied lanyard keep work flowing even after the sun sets.

Key Features
  • Lightweight ABS housing resists knocks
  • Back-light enables night viewing
  • Simple four-button interface speeds set-up
  • User set heat index alarm shields health
  • 30 lap memory with fastest and average recall
  • Ten hour countdown for warm-ups or rests
  • Switchable 12 or 24 hour time display
  • Temperature and humidity refresh every five seconds
  • Supplied lanyard keeps Extech HW30 within reach
  • Battery installed for instant operation

 

Technical Specifications
AlarmProgrammable audible alert
CalendarDay and date display
Clock Format12-hour or 24-hour
Stopwatch Timing Capacity9 h 59 min 59 s
Lap Memory30 records
Countdown Timer Range10 hours
Heat Index Range22 °C to 50 °C (70 °F to 122 °F)
Temperature Range-10 °C to 50 °C (14 °F to 122 °F)
Relative Humidity Range1 % to 99 % RH
Timing Accuracy±5 seconds per day
DisplayLarge backlit digital LCD
Lap/Split Recall ModesFastest, slowest, average
PowerBattery included
Supplied AccessoriesLanyard and operating instructions
pdf
What’s Included
  • Extech HW30 multifunction stopwatch
  • Lanyard
  • Battery
  • Operating instructions

QUESTIONS

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