---
product_id: 76381981
title: "Extech Instruments 39240 Waterproof Thermometer with Stainless Steel Stem"
brand: "extech"
price: "725 kr"
currency: DKK
in_stock: false
url: https://www.desertcart.dk/products/76381981-extech-instruments-39240-waterproof-thermometer-with-stainless-steel-stem
store_origin: DK
region: Denmark
---

# Waterproof design for rugged use Auto power off + data hold Wide temp range -40 to 392°F Extech Instruments 39240 Waterproof Thermometer with Stainless Steel Stem

**Brand:** extech
**Price:** 725 kr
**Availability:** ❌ Out of Stock

## Summary

> 🌟 Take the Temperature of Success with Extech’s Waterproof Precision!

## Quick Answers

- **What is this?** Extech Instruments 39240 Waterproof Thermometer with Stainless Steel Stem by extech
- **How much does it cost?** 725 kr with free shipping
- **Is it available?** Currently out of stock
- **Where can I buy it?** [www.desertcart.dk](https://www.desertcart.dk/products/76381981-extech-instruments-39240-waterproof-thermometer-with-stainless-steel-stem)

## 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

- • **Energy Efficient:** Auto power off extends battery life so you’re always ready to measure
- • **Compact & Portable:** Slim 2.75-inch stem fits easily in your toolkit or pocket
- • **Smart Memory Recall:** Instant access to max/min temperature history for informed decisions
- • **Built to Brave the Elements:** Waterproof stainless steel stem withstands outdoor and wet environments
- • **Precision at Your Fingertips:** ±2°F/1°C accuracy ensures reliable readings every time

## Overview

The Extech 39240 is a rugged, waterproof digital thermometer featuring a 2.75-inch stainless steel stem, capable of measuring temperatures from -40 to 392°F (-40 to 200°C) with ±2°F/1°C accuracy. It includes max/min recall, data hold, and auto power off functions, powered by an included LR44 battery, making it ideal for professional outdoor and indoor temperature monitoring.

## Description

Extech Instruments 39240 Waterproof Thermometer with Stainless Steel Stem

## Features

- 2.75 inch (70 mm) stainless steel stem
- Temperature: -40 to 392°F (-40 to 200°C)
- Maximum/minimum recall of high and low temperatures
- Data hold and auto power off features
- ±2°F/1°C accuracy, 0.1°/1° resolution

## Technical Specifications

| Specification | Value |
|---------------|-------|
| Brand | Extech |
| Special Feature | Waterproof |
| Colour | Green |
| Included Components | Complete with one LR44 button |
| Outer Material | Stainless Steel |
| Specification Met | CE |
| Display Type | Digital |
| Product Care Instructions | Wipe Clean |
| Power Source | Battery Powered |
| Model Name | 39240 |
| Number of Batteries | 1 LR44 batteries required. (included) |
| Upper Temperature Rating | 200 Degrees Celsius |
| Reusability | Rechargeable |
| Immersion Depth | 2.75 Inches |
| Indoor/Outdoor Usage | Outdoor |
| UPC | 798256173493 767654496404 793950392409 |
| Global Trade Identification Number | 00793950392409 |
| Age Range (Description) | Adult |
| Manufacturer | Extech Instruments |
| Style | Digital |
| Country of Origin | USA |
| Model number | 39240 |
| Number of Memory Sticks | 1 |
| Item Weight | 50 g |
| Product Dimensions | 1.78 x 14.99 x 2.04 cm; 50 g |
| Batteries | 1 LR44 batteries required. (included) |
| Item model number | 39240 |
| Item Height | 2.04 Centimeters |
| Item Width | 14.99 Centimeters |
| Are batteries included? | Yes |
| Lithium Battery Packaging | Batteries packed with equipment |

## Product Details

- **Brand:** Extech
- **Special Feature:** Waterproof
- **Colour:** Green
- **Included Components:** Complete with one LR44 button
- **Outer Material:** Stainless Steel

## Images

![Extech Instruments 39240 Waterproof Thermometer with Stainless Steel Stem - Image 1](https://m.media-amazon.com/images/I/51GFrVnktXL.jpg)
![Extech Instruments 39240 Waterproof Thermometer with Stainless Steel Stem - Image 2](https://m.media-amazon.com/images/I/71VdWrG2vkL.jpg)
![Extech Instruments 39240 Waterproof Thermometer with Stainless Steel Stem - Image 3](https://m.media-amazon.com/images/I/81yF3-2ZktL.jpg)

## Questions & Answers

**Q: I need to know if this unit includes a calibration certificate?**
A: I did not receive a certificate with my Used - Very Good unit purchased on Nov 13 '19 from Amazon.

**Q: can this be used for room temperatures?**
A: it shows the ambient temperature when you turn it on....so if in your pocket it may read higher leave it on a table it will show the room temp when you turn it on.

**Q: Does this take the reading at the tip rather than middle of the stem?**
A: It takes the reading at the indentation just a short ways up the tip.

**Q: how long is the metal rod part? it looks shorter than the other similar items', from the picture i see.**
A: The metal rod part is 2 3/4”.

## Frequently Bought Together

- Extech Instruments 39240 Waterproof Stem Thermometer,Green
- Water Management Legionella Log Book: Legionella Risk Assessment Record Keeping Logbook, Record and Track All Water Temperature Checks
- HSE Health And Safety Law Poster A3 FWC30/A3: what you need to know (Statutory Instruments 2024)

---

## Why Shop on Desertcart?

- 🛒 **Trusted by 1.3+ Million Shoppers** — Serving international shoppers since 2016
- 🌍 **Shop Globally** — Access 737+ million products across 21 categories
- 💰 **No Hidden Fees** — All customs, duties, and taxes included in the price
- 🔄 **15-Day Free Returns** — Hassle-free returns (30 days for PRO members)
- 🔒 **Secure Payments** — Trusted payment options with buyer protection
- ⭐ **TrustPilot Rated 4.5/5** — Based on 8,000+ happy customer reviews

**Shop now:** [https://www.desertcart.dk/products/76381981-extech-instruments-39240-waterproof-thermometer-with-stainless-steel-stem](https://www.desertcart.dk/products/76381981-extech-instruments-39240-waterproof-thermometer-with-stainless-steel-stem)

---

*Product available on Desertcart Denmark*
*Store origin: DK*
*Last updated: 2026-02-21*