---
product_id: 7519405
title: "Thomas - 4239 Traceable Hi-Accuracy Refrigerator Thermometer, with 2 Bottle Probe, -58 to 158 degree F"
brand: "thomas"
price: "₩367749"
currency: KRW
in_stock: true
url: https://www.desertcart.kr/products/7519405-thomas-4239-traceable-hi-accuracy-refrigerator-thermometer-with-2-bottle
store_origin: KR
region: South Korea
---

# 10ft Cable Length Accuracy: ±0.3°C Temp Range: -58 to 158°F Thomas - 4239 Traceable Hi-Accuracy Refrigerator Thermometer, with 2 Bottle Probe, -58 to 158 degree F

**Brand:** thomas
**Price:** ₩367749
**Availability:** ✅ In Stock

## Summary

> 🔔 Keep it Cool, Keep it Safe!

## Quick Answers

- **What is this?** Thomas - 4239 Traceable Hi-Accuracy Refrigerator Thermometer, with 2 Bottle Probe, -58 to 158 degree F by thomas
- **How much does it cost?** ₩367749 with free shipping
- **Is it available?** Yes, in stock and ready to ship
- **Where can I buy it?** [www.desertcart.kr](https://www.desertcart.kr/products/7519405-thomas-4239-traceable-hi-accuracy-refrigerator-thermometer-with-2-bottle)

## Best For

- thomas enthusiasts

## Why This Product

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

## Key Features

- • **Certified Confidence:** Comes with a NIST Traceable Certificate from an A2LA-accredited lab, meeting CDC requirements for thermometers and vaccine storage.
- • **Versatile Monitoring:** Choose between a temperature-buffered bottle sensor or a waterproof probe sensor for tailored monitoring in any environment.
- • **Alarm Your Way to Safety:** Visual and audible alarms alert you to out-of-range temperatures, so you can act fast and protect your perishables.
- • **Stay Informed, Stay Safe:** Three-line LCD displays current, minimum, and maximum temperatures, keeping you in the loop at all times.
- • **Precision Meets Performance:** Experience unparalleled accuracy with a temperature range of -58 to 158°F, ensuring your food and vaccines are always at optimal conditions.

## Overview

The Thomas4239 Traceable Hi-Accuracy Refrigerator Thermometer is designed for precision monitoring in various settings, featuring a wide temperature range, high accuracy, and a choice of sensors. It includes a three-line LCD for easy reading and alarms for temperature deviations, all backed by a NIST Traceable Certificate for reliability.

## Description

Thomas - 4239 Traceable Hi-Accuracy Refrigerator Thermometer, with 2 Bottle Probe, -58 to 158 degree F

## Features

- High-accuracy refrigerator thermometer has -58 to +158 degrees F/-50 to +70 degrees C temperature range with +/- 0.3 degrees C accuracy for use in refrigerators, water baths, heat blocks, and incubators
- Choice of temperature-buffered bottle sensor or waterproof probe sensor, and 10-foot long micro cable allows doors to be closed on it
- Three-line LCD simultaneously displays minimum, maximum, and current temperature, and alarm provides visual and audible alarms for out-of-range temperatures
- Meets CDC requirements for thermometers and vaccine thermometers, and includes NIST Traceable Certificate provided by an A2LA-accredited ISO 17025 calibration laboratory to ensure accuracy and traceability

## Product Details

- **Brand:** Thomas
- **Special Feature:** High Accuracy
- **Age Range (Description):** Adult
- **Included Components:** Traceable Hi-Accuracy Refrigerator Thermometer, with 2 Bottle Probe.
- **Outer Material:** Acrylonitrile Butadiene Styrene
- **Display Type:** LCD
- **Product Care Instructions:** Hand Wash Only
- **Unit Count:** 1.0 Count
- **Power Source:** Battery Powered
- **Number of Batteries:** 2 AA batteries required.

## Images

![Thomas - 4239 Traceable Hi-Accuracy Refrigerator Thermometer, with 2 Bottle Probe, -58 to 158 degree F - Image 1](https://m.media-amazon.com/images/I/51l9W2N-+eL.jpg)

## Available Options

This product comes in different **Size** options.

## Questions & Answers

**Q: These calibrated thermometers always have an outdate on the back.....   what is the date on this piece?**
A: I've never known the outdate until purchase.  I get a certificate with the thermometer that has the expiration of calibration date.  It comes with a  NIST (National Institute of Standards and Technology)Traceable Certificate.  The last one I bought has a 22 month expiration date.  I've never gotten one with less than 18 mos.

**Q: Will the thermometer also display in Celsius?**
A: Yes it will, displays in either Celsius or Fahrenheit

**Q: Does this unit log data that can be downloaded to meet current vaccine storage requirements ?**
A: No, I can not locate any information that states the data can be downloaded.

New high-accuracy dual thermometers read to 0.01 degrees while monitoring temperatures in refrigerator and freezer simultaneously or two refrigerator locations. Its temperature-buffered bottle sensor insulates and eliminates rapid temperature changes when refrigerator door is opened. A patented unit fulfills all CDC thermometer and vaccine thermometer requirements. They can also be used in water baths, heating blocks, and incubators.

Triple display simultaneously shows minimum/maximum and current temperatures
Minimum/maximum monitors readings for any time period and displays the exact time and date when the min/max temperature occurred for both thermometers
Alarm provides two visual and two audio alerts when temperature rises above or falls below high and low set points
Unit displays the exact time and date when dual thermometer alarms are triggered
Alarms are programmable in 0.01° increments
Visual and audible alarms signal continuously (for days) even if temperature returns to non-alarm range
Ten-foot micro-cable permits refrigerator doors to close on it
Range is –58 to 158°F and –50 to 70°C with a resolution of 0.01° and accuracy of ±0.3°C
Probe is sealed in a miniature bottle (1 x 2-1/2 inches) filled with non-toxic glycol
Eliminates concerns about incidental contact with food or drinking water
High-impact, chemical-resistant ABS plastic case is: 2-3/4 x 4-1/4 x 3/4 inches. Weight is 5 ounces
Stand, Velcro™, magnetic strips, and wall mount allow placing thermometer and bottle sensor anywhere
To assure accuracy, an individually serial-numbered Traceable® Certificate is provided by an ISO 17025 calibration laboratory accredited by A2LA. It indicates traceability to standards provided by NIST (National Institute of Standards and Technology).

Please note: The aforementioned A2LA accreditation belongs to the manufacturer, not Thomas Scientific.

**Q: Does the model with just probes come with any way of attaching to a side wall such as suction cups?**
A: No,  I just tucked it in amongst items in a chest freezer.

## Frequently Bought Together

- Thomas - 4239 Traceable Hi-Accuracy Refrigerator Thermometer, with 2 Bottle Probe, -58 to 158 degree F
- TRACEABLE - AO-90080-06 Traceable Thermometer with Clock, Humidity Monitor, and Calibration

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*Product available on Desertcart South Korea*
*Store origin: KR*
*Last updated: 2026-02-19*