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Availability:
In Stock.
Arrives
Saturday, Nov 14
At a glance
- Condition
- New
- Size
- 1 pack
- Model
- ST4
- Weight
- 13.6 oz
- Color
- Yellow/Black
- Outer Material
- Rubber
- Display Type
- LCD
- In the box
- 9-Volt battery
Features 5
- Read T1, T2, or T1-T2
- Rugged rubber boot
- Min/Max and Hold
- LED indicates disengaged probe
- Great temperature compensation for fast changing environments
Description
The Fieldpiece Dual-Temperature meter, Model ST4, measures two temperatures simultaneously using the included K-Type, wrap tab beaded thermocouples. The technology inside the ST4 provides superior temperature compensation in rapidly changing environments commonly found while performing field service. Use the ST4 to find Delta T and just about any temperature split you want to measure. Displays T1, T2 and T1-T2 in big numbers on the LCD screen. Features two front face calibration pots and comes in our clear front case with Magnetic hanger model ANC6. Use with our optional Atwb1 wet bulb thermocouple to help you find target superheat or with our pipe clamp T/CS to check for blocked Dryer filters.
Specs 29
| Brand | Fieldpiece |
|---|---|
| Special Feature | Great temperature compensation for fast changing environments |
| Color | Yellow/Black |
| Age Range (Description) | Adult |
| Outer Material | Rubber |
| Display Type | LCD |
| Product Care Instructions | Wipe Clean |
| Unit Count | 1 Count |
| Power Source | corded-electric |
| Additional Features | Great temperature compensation for fast changing environments |
| Number of Batteries | 1 9V batteries required. (included) |
| Upper Temperature Range | 1200 °C |
| Response Time | 500 milliseconds |
| Reusability | Rechargeable |
| Indoor Outdoor Usage | Indoor |
| Battery Life | 100 hours |
| Inner Material | Silicone rubber |
| Style Name | Contemporary |
| Brand Name | Fieldpiece |
| Age Range Description | Adult |
| Model Name | ST4 |
| Model | ST4 |
| UPC | 787721619901 735090638122 872641000462 |
| Global Trade Identification Number | 62 |
| Manufacturer | Standard Plumbing Supply |
| Item Weight | 13.6 ounces |
| Item Type Name | ST4 |
| Part Number | ST4 |
| Item Length | 7 inches |
No specs match.
Frequently asked questions
If you place your order now, the estimated arrival date for this product is:
Saturday, Nov 14
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.
To initiate a return, please visit our Returns Center.
View our full returns policy here.
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Top Amazon Reviews
Works GREAT !
Very nice unit for using for checking temps on anything I want . From pool temps. to cooking uses and of course keeping a eye on A/C performance . That is a very important maintenance check here in Az. Not sure if it meets Pro AC techs expectations or not . But what more do you need than a accurate reading ? Which this unit was within a couple 10ths right out of box . Ice water test and boiling water test both right on within a 10th or 2 . Can't ask for more . Very simple calibration there is even a video to explain what to do . Mine was close enough for me out of the box .
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Reviewed in the United States on September 8, 2026 by William D.
Works well
Pros: - Fast accurate readings of two probes - Solid construction - Good battery life Cons: - Have to press a button to switch between the two probes, would be nice if both could be seen on screen at the same time - It's a tad bulky - The thermocouples it came with were poor quality and both broke quickly - The carrying case it came with is pretty bad and I ended up just tossing it
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Reviewed in the United States on March 24, 2023 by VK
Easy to use and accurate
worked well and did the job- one thing to note , after setting the units of measurement turn the device off as will not go directly into reading microns but stays in the setting mode. After turning back on you can take readings in the units previously set. This is not explained in the manual and I sent my unit to Fiedpiece. They said it worked fine and sent it back still not making me aware of the fact that you needed to go from the setting mode to the reading mode. This could have been explained in the manual.
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Reviewed in the United States on September 21, 2020 by Robert
Mostly good
Overall somewhat disappointed in this expensive thermometer. On the positive side It's sturdy and easy to calibrate. Nice switches and rubber wrap. However as others have noted no backlight and you can't view both probes at once. The whole design seems pretty dated with 2 screws to open the battery compartment. And a 9 voltage battery is disappointing. Lasted maybe 40 hours. And on mine the Max-Min doesn't work. It says Max and Min when you push the button but it keeps on changing as they temperature changes, worthless. Probably just a flaw on mine but at this price expected better. I don't think today even a good instrument should cost this much, but after trying two cheaper ones that were just junk I am glad to have this one that reads the temperature reliably and easy to calibrate when you change probes. Today's probes seems poor quality and you do need to calibrate when you use a different one.
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Reviewed in the United States on January 6, 2024 by Jim
Accurate reading
Surprisingly, we bought this for our smoker. The wireless thermometers we have bought were way off in temp. My husband, who does HVAC work, suggested we should try using this meter. I have 2 probes and that plug in to the meter and cooking has been FAR more accurate.
Reviewed in the United States on June 12, 2026 by Danaburger
Works well and controls are well thought out.
Using a calibrated mercury lab thermometer for reference, both thermocouples were within 1 degree or less at various temperatures in liquids. Both thermocouples matched each other usually exactly and never more than a couple tenths of a degree off. This is a great tool for HVAC work. And you'll find plenty of other uses for it. I didn't calibrate mine as it wasn't needed out of the box, but you have that option too. The plastic case feels like cheap overly hard plastic. But the soft armored cover is good and makes the plastic of no concern. So I think it a pretty high value instrument vs others costing much more for the same purpose.
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Reviewed in the United States on September 30, 2018 by DeeMee
Very accurate
This meter is very accurate and works great. I found the included thermocouples cumbersome to work with so I went out and bought the clamp on style. I turned the included thermocouples into wet bulb thermocouples with an old hollow shoe string and alligator clips.
Reviewed in the United States on August 27, 2024 by Andrew R
Quality temperature meter
I love this thing. My GF thinks I'm crazy because I take reading all across my house. Ideal for measuring delta T temps from return and supply. I also use it to measure subcooling and superheat. Easy to use and calibrate using ice water.
Reviewed in the United States on July 23, 2025 by Tom