---
product_id: 611404322
title: "UEi PDT655 Differential Temperature Folding Pocket Thermometer, HVAC Digital Thermometer with Backlit Display and Magnetic Mount, Measures -58 to 572°F"
brand: "uei test instruments"
price: "608.50 DT"
currency: TND
in_stock: true
reviews_count: 5
category: "U Ei Test Instruments"
url: https://www.desertcart.tn/products/611404322-uei-pdt655-differential-temperature-folding-pocket-thermometer-hvac-digital-thermometer
store_origin: TN
region: Tunisia
---

# Built-in magnet for hands-free use 500ms fast response time Measures -58 to 572°F UEi PDT655 Differential Temperature Folding Pocket Thermometer, HVAC Digital Thermometer with Backlit Display and Magnetic Mount, Measures -58 to 572°F

**Brand:** uei test instruments
**Price:** 608.50 DT
**Availability:** ✅ In Stock

## Summary

> 🌟 Stay cool, stay precise — the pro’s pocket powerhouse!

## Quick Answers

- **What is this?** UEi PDT655 Differential Temperature Folding Pocket Thermometer, HVAC Digital Thermometer with Backlit Display and Magnetic Mount, Measures -58 to 572°F by uei test instruments
- **How much does it cost?** 608.50 DT with free shipping
- **Is it available?** Yes, in stock and ready to ship
- **Where can I buy it?** [www.desertcart.tn](https://www.desertcart.tn/products/611404322-uei-pdt655-differential-temperature-folding-pocket-thermometer-hvac-digital-thermometer)

## Best For

- uei test instruments enthusiasts

## Why This Product

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

## Key Features

- • **Compact Yet Mighty:** Folding probe design fits in your pocket and reaches tight spaces effortlessly.
- • **Speed That Keeps Up:** Updates temperature readings every 500 milliseconds to track changes in real time.
- • **Hands-Free Efficiency:** Magnetic mount lets you attach the thermometer to ducts for seamless multitasking.
- • **Read Anytime, Anywhere:** Large backlit digital display ensures clear readings even in dark basements or attics.
- • **Precision at Your Fingertips:** Differential temperature readings (T1, T2, T1-T2) for HVAC pros who demand accuracy.

## Overview

The UEi PDT655 is a professional-grade folding pocket thermometer designed for HVAC technicians and managers who value precision and convenience. It measures a wide temperature range from -58 to 572°F with rapid 500ms response time, features a large backlit display for easy reading in any environment, and includes a built-in magnet for hands-free operation. Its compact folding probe fits into tight spaces, making it an essential tool for fast, accurate differential temperature measurements on the go.

## Description

The UEi PDT655 provides you with all the benefits from the PDT650 but with a bigger display, bigger buttons, magnets for ducts all in the same compact size to still fit into your pocket! Functions Temperature Range: -58 to 572°F (-50 to 300°C) Temperature Differential - T1, T2, T1-T2 Features Back-fold temperature probe Reads open or closed Min/Max Back light Large easy-to-read display°F or °C Auto power off Built-in magnet Low battery indication 1-Year limited warranty Includes Battery (CR2032) User Manual

Review: UEi PDT655 is very nice and accurate - The device is somewhat on the larger size, but for most users this is a plus. Its length is 6 inches and the width is 1.5 and it about ¾ inch thick. It will fit in a pocket but there will be no hiding it there, too long for that. However, it’s actually about ½ inch shorter that the Samsung phone I carry. The readout numbers are ¾ high and easy to read from 10ft away with good lighting. The display does light up, but only for about 4 seconds, just long enough to see the number if you’re in a dark basement or attic. The probe length is 5 inches and has enough mechanical resistance that it holds the position as you place it into a vent or hole. I was able to hang it onto a vertical return grill by the probe only, since in this case the grill was aluminum. The built-in magnets will hold it nicely on a flat metal area but probably not on a round duct. On those you could easily hang it by the probe though. It uses 1 CR2032 battery which helps keep the weight down. It’s a common enough battery that big box and drug stores sell them and they are cheap. It will self-power off after one hour, a nice feature, but it also means that any readings you have also disappear. It updates very quickly and follows the temp rise in a duct very near real time. It followed the rise I saw with my Fluke thermocouple and I was impressed with that. Accuracy seems reasonable and matches up nicely with other thermometers that I believe to be accurate. See photo
Review: Great tool - Used by pros for a reason. Easy to ready. Very handy.

## Features

- DIFFERENTIAL TEMPERATURE: PDT655 can store temperature readings and measure differential temperature by Measuring (T1 - T2)
- VERSATILE: The PDT655 fits in your pocket and can take readings in tight spaces with a folding probe.
- EASY-TO-READ: The PDT655 comes equipped with a large digital display for easy reading. There is also a backlight to illuminate display in dark spaces.
- HANDS-FREE: The PDT655 includes a built in magnet that enables hands free operation for easy measurement of ducts and vents
- FAST READING: The PDT655 provides quick readings with a temperature probe that refreshes every second.

## Technical Specifications

| Specification | Value |
|---------------|-------|
| ASIN | B0938HPW8R |
| Age Range (Description) | Adult |
| Age Range Description | Adult |
| Brand | UEi Test Instruments |
| Brand Name | UEi Test Instruments |
| Colour | Yellow |
| Connectivity Technology | Wire |
| Country of Origin | China |
| Customer Reviews | 4.4 out of 5 stars 345 Reviews |
| Display Type | Digital |
| Global Trade Identification Number | 00053533508543 |
| Included Components | Battery (CR2032), User Manual |
| Indoor Outdoor Usage | Indoor |
| Item Length | 6 Inches |
| Manufacturer | UEI |
| Model Name | Differential Folding Pocket Thermometer w/ T1/T2 |
| Model Number | PDT655 |
| Number of Batteries | 1 Nonstandard Battery batteries required. |
| Outer Material | Plastic |
| Outer Material Type | Plastic |
| Part Number | PDT655 |
| Power Source Type | Battery Powered |
| Product Care Instructions | Wipe Clean |
| Response Time | 500 Milliseconds |
| Reusability | Reusable |
| Smart Home Compatibility | Not Smart Home Compatible |
| Special Feature | Differential Temperature |
| Special Features | Differential Temperature |
| Specification Met | CE |
| Style Name | Industrial |
| UPC | 053533508543 535335085434 |
| Unit Count | 1 Count |
| Upper Temperature Rating | 572 Degrees Fahrenheit |

## Product Details

- **Age Range (Description):** Adult
- **Brand:** UEi Test Instruments
- **Colour:** Multicoloured
- **Included Components:** PDT655
- **Special Feature:** Backlit

## Images

![UEi PDT655 Differential Temperature Folding Pocket Thermometer, HVAC Digital Thermometer with Backlit Display and Magnetic Mount, Measures -58 to 572°F - Image 1](https://m.media-amazon.com/images/I/41g8A4ZvhTS.jpg)
![UEi PDT655 Differential Temperature Folding Pocket Thermometer, HVAC Digital Thermometer with Backlit Display and Magnetic Mount, Measures -58 to 572°F - Image 2](https://m.media-amazon.com/images/I/61w01FMtuFL.jpg)
![UEi PDT655 Differential Temperature Folding Pocket Thermometer, HVAC Digital Thermometer with Backlit Display and Magnetic Mount, Measures -58 to 572°F - Image 3](https://m.media-amazon.com/images/I/51cquDFjFEL.jpg)
![UEi PDT655 Differential Temperature Folding Pocket Thermometer, HVAC Digital Thermometer with Backlit Display and Magnetic Mount, Measures -58 to 572°F - Image 4](https://m.media-amazon.com/images/I/61Jl6Ojj35L.jpg)

## Customer Reviews

### ⭐⭐⭐⭐⭐ UEi PDT655 is very nice and accurate
*by A***E on 1 February 2024*

The device is somewhat on the larger size, but for most users this is a plus. Its length is 6 inches and the width is 1.5 and it about ¾ inch thick. It will fit in a pocket but there will be no hiding it there, too long for that. However, it’s actually about ½ inch shorter that the Samsung phone I carry. The readout numbers are ¾ high and easy to read from 10ft away with good lighting. The display does light up, but only for about 4 seconds, just long enough to see the number if you’re in a dark basement or attic. The probe length is 5 inches and has enough mechanical resistance that it holds the position as you place it into a vent or hole. I was able to hang it onto a vertical return grill by the probe only, since in this case the grill was aluminum. The built-in magnets will hold it nicely on a flat metal area but probably not on a round duct. On those you could easily hang it by the probe though. It uses 1 CR2032 battery which helps keep the weight down. It’s a common enough battery that big box and drug stores sell them and they are cheap. It will self-power off after one hour, a nice feature, but it also means that any readings you have also disappear. It updates very quickly and follows the temp rise in a duct very near real time. It followed the rise I saw with my Fluke thermocouple and I was impressed with that. Accuracy seems reasonable and matches up nicely with other thermometers that I believe to be accurate. See photo

### ⭐⭐⭐⭐⭐ Great tool
*by N***Y on 1 March 2026*

Used by pros for a reason. Easy to ready. Very handy.

### ⭐⭐⭐⭐⭐ I love this thing
*by T***Y on 1 July 2025*

I do air conditioning and this is a great thermometer keeps track of the high and low temperatures and read out is very big numbers

## Frequently Bought Together

- UEi PDT655 Differential Temperature Folding Pocket Thermometer, HVAC Digital Thermometer with Backlit Display and Magnetic Mount, Measures -58 to 572°F
- UEi Test Instruments PDT650 Folding Pocket Digital Thermometer,Yellow
- WGGE WG-026 10 Pieces and 5 Colors Test Lead Set & Alligator Clips,20.5 inches / 22 AWG Copper Wire. The Clips soldered and Stamped to The Wires. (1 Pack)

---

## 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.tn/products/611404322-uei-pdt655-differential-temperature-folding-pocket-thermometer-hvac-digital-thermometer](https://www.desertcart.tn/products/611404322-uei-pdt655-differential-temperature-folding-pocket-thermometer-hvac-digital-thermometer)

---

*Product available on Desertcart Tunisia*
*Store origin: TN*
*Last updated: 2026-08-02*