---
product_id: 277197602
title: "EXTECH Instruments HW30 HeatWatch Humidity and Temperature Stopwatch"
brand: "extech"
price: "€ 15.64"
currency: EUR
in_stock: false
reviews_count: 3
url: https://www.desertcart.ie/products/277197602-extech-instruments-hw30-heatwatch-humidity-and-temperature-stopwatch
store_origin: IE
region: Ireland
---

# Calendar & 12/24 hr clock 1/100 sec stopwatch res Temp range 14-122°F EXTECH Instruments HW30 HeatWatch Humidity and Temperature Stopwatch

**Brand:** extech
**Price:** € 15.64
**Availability:** ❌ Out of Stock

## Summary

> ⏳ Stay ahead of time and climate — because every second and degree counts!

## Quick Answers

- **What is this?** EXTECH Instruments HW30 HeatWatch Humidity and Temperature Stopwatch by extech
- **How much does it cost?** € 15.64 with free shipping
- **Is it available?** Currently out of stock
- **Where can I buy it?** [www.desertcart.ie](https://www.desertcart.ie/products/277197602-extech-instruments-hw30-heatwatch-humidity-and-temperature-stopwatch)

## Best For

- extech enthusiasts

## Why This Product

- Trusted extech brand quality
- Free international shipping included
- Worldwide delivery with tracking
- 15-day hassle-free returns

## Key Features

- • **Memory Recall Power:** Recall fastest, slowest, and average lap times instantly to optimize your workflow or training sessions.
- • **Compact & Lightweight:** Weighing just 20g with a sleek 7.87 x 6.6 x 2.03 cm design, perfect for busy professionals on the move.
- • **Environmental Insight:** Real-time temperature, humidity, and heat index readings to keep you informed on the go.
- • **Versatile Timekeeping:** Switch effortlessly between 12 or 24-hour clock modes with calendar display and alarm functions.
- • **Precision Timing Mastery:** Stopwatch with 1/100 second resolution and 99 lap memory for ultimate performance tracking.

## Overview

The EXTECH HW30 HeatWatch is a compact, lightweight digital stopwatch that combines precision timing with environmental monitoring. Featuring 1/100 second stopwatch resolution, 99 lap memory, and real-time temperature, humidity, and heat index display, it’s designed for professionals who demand accuracy and versatility. Additional features include a calendar, alarm, hourly chime, and selectable 12/24-hour clock modes, all packed into a durable, easy-to-carry device.

## Description

Digital Stopwatch, Timing Range Count up to 9 hr., 59 min., 59 sec., Accuracy +/-5 Seconds per Day, Display 2-line LCD, Elapsed Time Yes, Split Time Yes, Calendar Display Alarm clock, hourly chime, calendar, 12/24 Hour Clock Operation Yes, Countdown Timer Yes, Lap Counter 99, Memory Recall 30 lap/split memory, Features Temperature, Humidity, Heat Index, Temp. Range 14 to 122 F, Battery Type CR2032, Includes Battery, 39" Neck Strap, Instructions. California ResidentsThis product can expose you to chemicals including Styrene, which is known to the State of California to cause cancer and birth defects or other reproductive harm. For more information go to www.P65Warnings.ca.gov.

Review: Siempre este cronómetro es una herramienta confiable. He usado este modelo por más de 6 años y es muy fácil y práctico
Review: It is as I thought , works great. Useful.

## Features

- Displays temperature, humidity and heat index
- Up/Down stopwatch function with 1/100 second resolution
- Stopwatch has 99 lap counter with Fastest/Slowest/Average lap recall
- 12 or 24 hour clock function
- Calendar mode displays day, month and date

## Technical Specifications

| Specification | Value |
|---------------|-------|
| ASIN | B00023RYPO |
| Best Sellers Rank | #149,746 in Sporting Goods ( See Top 100 in Sporting Goods ) #219 in Stopwatches |
| Brand | Extech |
| Color | Green |
| Customer Reviews | 5.0 5.0 out of 5 stars (11) |
| Date First Available | 7 August 2012 |
| Item Weight | 20 g |
| Material | Plastic |
| Model Number | HW30 |
| Product Dimensions | 7.87 x 6.6 x 2.03 cm; 20 g |

## Product Details

- **Brand:** Extech
- **Colour:** Green
- **Item weight:** 0.02 Kilograms
- **Material:** Plastic
- **Product dimensions:** 6.6D x 7.9W x 2H centimeters

## Images

![EXTECH Instruments HW30 HeatWatch Humidity and Temperature Stopwatch - Image 1](https://m.media-amazon.com/images/I/616CN7TVVqL.jpg)
![EXTECH Instruments HW30 HeatWatch Humidity and Temperature Stopwatch - Image 2](https://m.media-amazon.com/images/I/61Fdg-VY5bL.jpg)
![EXTECH Instruments HW30 HeatWatch Humidity and Temperature Stopwatch - Image 3](https://m.media-amazon.com/images/I/71tyxt5ILBL.jpg)

## Questions & Answers

**Q: Does this watch make any noise or sound when you press the buttons?**
A: No, no noise at all

**Q: Does this come with a certificate?**
A: Thank you so much for your interest in our products. The 365510 is able to receive a Certificate of Compliance by us after the purchase. Also, if you pay the additional difference, it can receive a traceable NIST calibration certificate. Be sure to check the part number for it 365510-NIST

**Q: how quickly do the temperature and humidity readings get updated?  in a minute, or in ten? and its real size?**
A: The temperature updates within seconds while the humidity may take a few seconds more to stabilize and prodcue the display.

**Q: how tall are the numbers?**
A: Mine, which is a model 365510 has numbers just a shade under 3/8", probably closer to 5/16". I find them adequate for the job at hand.

## Customer Reviews

### ⭐⭐⭐⭐⭐ Review
*by I***A on 25 January 2023*

Siempre este cronómetro es una herramienta confiable. He usado este modelo por más de 6 años y es muy fácil y práctico

### ⭐⭐⭐⭐⭐ Review
*by S***M on 11 August 2024*

It is as I thought , works great. Useful.

### ⭐⭐⭐⭐⭐ Review
*by S***E on 14 March 2024*

bon petit chrono , surtout utile pour l'humidex

## Frequently Bought Together

- EXTECH Instruments HW30 HeatWatch Humidity and Temperature Stopwatch
- GEARWRENCH 20 Piece Ratcheting Combination Wrench | SAE & Metric | 35720A-02
- Extech 480400 Phase Tester

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*Product available on Desertcart Ireland*
*Store origin: IE*
*Last updated: 2026-02-25*