Search  for anything...
UEi Test Instruments

UEi PDT655 Differential Temperature Folding Pocket Thermometer, HVAC Digital Thermometer with Backlit Display and Magnetic Mount, Measures -58 to 572°F

    • Based on 162 reviews
Condition: New
Checking for product changes
$28.52 Why this price?
Holiday Deal · 11% off was $31.95

Buy Now, Pay Later

As low as $7 / mo
  • – 4-month term
  • – No impact on credit
  • – Instant approval decision
  • – Secure and straightforward checkout

Ready to go? Add this product to your cart and select a plan during checkout. Payment plans are offered through our trusted finance partners Klarna, PayTomorrow, Affirm, Afterpay, Apple Pay, and PayPal. No-credit-needed leasing options through Acima may also be available at checkout.

Learn more about financing & leasing here.

Free shipping on this product

30-day refund/replacement

To qualify for a full refund, items must be returned in their original, unused condition. If an item is returned in a used, damaged, or materially different state, you may be granted a partial refund.

To initiate a return, please visit our Returns Center.

View our full returns policy here.

Availability: In Stock.
Fulfilled by UEi
Arrives Dec 27 – Dec 31
Order within 20 hours and 15 minutes
Available payment plans shown during checkout

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.

Brand: UEi Test Instruments


Special Feature: Differential Temperature


Color: Yellow, Black


Age Range (Description): Adult


Included Components: User Manual, Battery (CR2032)


Specification Met: Ce Conformity


Display Type: Digital


Product Care Instructions: Wipe Clean


Unit Count: 1 Count


Power Source: Corded-electric


Product Dimensions ‏ : ‎ 1 x 1 x 1 inches; 3.2 ounces


Item model number ‏ : ‎ PDT655


Date First Available ‏ : ‎ April 22, 2021


Manufacturer ‏ : ‎ UEI.


Best Sellers Rank: #21,796 in Industrial & Scientific (See Top 100 in Industrial & Scientific) #10 in Lab Digital Thermometers


#10 in Lab Digital Thermometers:


Customer Reviews: 4.4 4.4 out of 5 stars 162 ratings


Frequently asked questions

If you place your order now, the estimated arrival date for this product is: Dec 27 – Dec 31

Yes, absolutely! You may return this product for a full refund within 30 days of receiving it.

To initiate a return, please visit our Returns Center.

View our full returns policy here.

  • Klarna Financing
  • Affirm Pay in 4
  • Affirm Financing
  • Afterpay Financing
  • PayTomorrow Financing
  • Financing through Apple Pay
Leasing options through Acima may also be available during checkout.

Learn more about financing & leasing here.

Similar Products

Top Amazon Reviews

    • UEi PDT655 is very nice and accurate
Review Image by ALE ALE
Review Image by ALE ALE
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 ... show more
Reviewed in the United States on February 1, 2024 by ALE ALE
    • Magnetic with a quick accurate read
In my tool bag everyday. Small and compact. Sharp probe fits in the smallest duct holes or flex. Magnet is a bonus feature. Buy two for quick differentials
Reviewed in the United States on July 22, 2024 by Jeremiah iverson
    • Large Display
The large display on these probes are much easier to read, as an residential hvac tech I use these probes several times a day checking TDs. The green backlight is nice also for dark spaces. These probes are accurate and react quickly to temperature change. Only issue I’ve had is I dropped one of them about 6’ to a garage floor and now part of the display doesn’t show.. my fault tho honestly ... show more
Reviewed in the United States on August 4, 2024 by Chase
    • Quality
I've used the smaller uei probes without the back light and liked them. These with the back light are larger then I expected but super easy to see the reading especially with the back light on. I received them quickly and in secured packaging. I definitely recommend buying these they work great.
Reviewed in the United States on September 22, 2024 by Aaron
    • Works great - accurate - and easy to read.
I use this for checking the split system in my home. It works perfectly and was recommended by the a/c technician that was servicing the unit. A no brainer if you are looking for something like this.
Reviewed in the United States on October 18, 2024 by Mike R.
    • The UEi PDT655 Responds quickly!
My reason for the purchase is to measure the central air in my house. This thermometer responds very fast and reads me the temperature of the air realsed from A/C unit, which allows me to compare the reading to the temperature read on the wall thermostat. The light on the panel is clear so one does not need to struggle to read the measurements. ... show more
Reviewed in the United States on July 17, 2024 by Mother of a Large Family
    • It’s big!
I wish it weren’t so big. Even if it had a clip it’s too big for my top pocket. Magnets are weak. The magnets might be strong enough if the tool wasn’t so big. I also have found a tool not to be very durable. I owned it for three weeks. I dropped it on the floor from a distance of 3 feet and a liquid crystal display is all screwed up. I am currently looking for a different tool ... show more
Reviewed in the United States on July 15, 2024 by James mcnulty
    • Nicely made probe
accurate and reasonably priced
Reviewed in the United States on June 13, 2024 by punchoutman

Can't find a product?

Find it on Amazon first, then paste the link below.