UEi PDT655 Differential Temperature Folding Pocket Thermometer, HVAC Digital Thermometer with Backlit Display and Magnetic Mount, Measures -58 to 572°F
Original price was: $31.95.$28.52Current price is: $28.52.
Price: $31.95 - $28.52
(as of Aug 13, 2025 06:35:14 UTC – Details)
Product Description
Additional information for the PDT655
The UEi PDT655 is a back-folding digital pocket thermometer capable of calculating differential temperature. The large and glove friendly design, hands-free magnetic mount, and folding probe capable of reading in any position make it the ideal choice for any HVAC/R job.
The large and glove friendly design, hands-free magnetic mount, and folding probe capable of reading in any position make it the ideal choice for any HVAC/R job.
The PDT655 offers readings in either Fahrenheit or Celsius scales and features a reading range of -58-572 °F (-50-300 °C). The large backlit display features a low battery indicator, Min/Max functions, and allows you to designate T1 and T2 to calculate T1-T2.
The 5 in. probe allows you to easily get reliable and accurate measurements in either ambient air or direct contact in solids and liquids.
Product Dimensions : 1 x 1 x 1 inches; 3.2 ounces
Item model number : PDT655
Date First Available : April 22, 2021
Manufacturer : UEI.
ASIN : B0938HPW8R
Best Sellers Rank: #4,028 in Industrial & Scientific (See Top 100 in Industrial & Scientific) #5 in Lab Digital Thermometers
Customer Reviews: 4.4 4.4 out of 5 stars 248 ratings var dpAcrHasRegisteredArcLinkClickAction; P.when(‘A’, ‘ready’).execute(function(A) { if (dpAcrHasRegisteredArcLinkClickAction !== true) { dpAcrHasRegisteredArcLinkClickAction = true; A.declarative( ‘acrLink-click-metrics’, ‘click’, { “allowLinkDefault”: true }, function (event) { if (window.ue) { ue.count(“acrLinkClickCount”, (ue.count(“acrLinkClickCount”) || 0) + 1); } } ); } }); P.when(‘A’, ‘cf’).execute(function(A) { A.declarative(‘acrStarsLink-click-metrics’, ‘click’, { “allowLinkDefault” : true }, function(event){ if(window.ue) { ue.count(“acrStarsLinkWithPopoverClickCount”, (ue.count(“acrStarsLinkWithPopoverClickCount”) || 0) + 1); } }); });
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.
Customers say
Customers find the thermometer accurate and appreciate its large display numbers. They like its temperature differential capabilities and consider it an excellent tool. The size receives mixed feedback, with some finding it compact while others note it’s somewhat bulky. Durability and magnet strength also get mixed reviews, with some reporting good quality while others find it not durable and the magnet too weak.
8 reviews for UEi PDT655 Differential Temperature Folding Pocket Thermometer, HVAC Digital Thermometer with Backlit Display and Magnetic Mount, Measures -58 to 572°F
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Original price was: $31.95.$28.52Current price is: $28.52.
ALE –
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, itâs 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 youâre 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. Itâs 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
Joshua Castleberry –
Works very well
Bigger than expected definitely wish it was smaller but it works great!
Use it then rate it –
Pocket thermometer
Why did you pick this product vs others?:Price was good but if you want to use it as a pocket thermometer it will fill the shirt pockets by itself
Tommy –
I love this thing
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
Edith Cruz –
Great price and size
Excellent tool
Christina –
HUGE! No longer a pocket thermometer.
An accurate well made thermometer that is much larger than the common pocket thermometer. It will fit a pocket, alone. If you buy it, it might not fit your maintenance pouch.
seyoum habtemariam –
CLEAR
WORKS GREAT.
James mcnulty –
Itâs big!
I wish it werenât so big. Even if it had a clip itâs too big for my top pocket. Magnets are weak. The magnets might be strong enough if the tool wasnât 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