The short version
- A handheld digital thermometer (model TP-03B) that reads from -58 to 572°F. The maker states ±0.9°F accuracy between 32 and 212°F and a 1-second response.
- $9.99 on Sep 30, 2026, sold by the third-party seller TempPro HOME and shipped by Amazon. It runs on one AAA battery.
- It has no calibration function, so an ice-water test tells you whether it reads true but can't adjust it. It is also not waterproof and not meant to stay in the oven.
Lives on the fridge door by its magnet, next to the stove.
Not a sleeping-area item.
Not a bathroom item.
A food probe, not a room thermometer; see LV2 for that.
Solid yellow = where it lives · hatched = also works there
What the spec sheet shows
We read TempPro's product page and the English user manual for the TP-03B, plus the Amazon listing for ASIN B01IHHLB3W, all on Sep 30, 2026. The listing shows the brand as TempPro (store "Visit the TempPro Store"), model "TempSwift PLUS TP-03B," in Bright Red. TempPro's product page notes that an order may arrive in packaging with the company's previous brand name.
| Spec | Value | What to know |
|---|---|---|
| Range | -58 to 572°F (-50 to 300°C) | The display shows LL.L or HH.H outside this range, per the manual. |
| Stated accuracy | ±0.9°F, 32–212°F | That is the manual's figure. A comparison table on TempPro's own page lists ±1.8°F for this model, so the maker's figures don't agree. |
| Response time | 1 second | As the maker states it. Still, wait for the number to stop moving, as the manual says. |
| Resolution | 0.1° | Switches between °F and °C with a button and remembers the last one you used. |
| Probe | 3.93 in, 304 stainless | It folds into the body and pops out at the press of a button. |
| Sensor | NTC thermistor | Per TempPro's spec list. |
| Power | 1 × AAA | The manual and product page say one AAA. The Amazon spec table says "2 AA," which contradicts both. |
| Auto-off | 10 min | The backlight toggles on the power button. |
| Calibration | None | TempPro's comparison table lists "Calibration Function: N." |
| Waterproof | No | TempPro's page says the TP03B has no waterproof rating. |
What the standards and sources say
Certification. NSF's food equipment listing under NSF/ANSI 2 names model TP-03B, as a "Digital Meat Thermometer" rated -58 to 572°F. The listed manufacturer is iTronics Co., Ltd [3]. NSF/ANSI 2 is a food-equipment standard that covers materials, design and construction. It is not a measure of how accurate the reading is.
The temperatures. The USDA's Food Safety and Inspection Service (FSIS) says to cook food to minimum internal temperatures measured with a food thermometer before taking it off the heat [1]. Its chart, checked Sep 30, 2026:
| Food (FSIS wording) | Minimum internal temperature | Rest |
|---|---|---|
| Beef, pork, veal and lamb steaks, chops and roasts | 145°F | At least 3 minutes |
| Ham, fresh or smoked (uncooked) | 145°F | At least 3 minutes |
| Fish and shellfish | 145°F | — |
| Ground meats | 160°F | — |
| Eggs (FoodSafety.gov applies this to egg dishes such as quiche [6]) | 160°F | — |
| All poultry, including ground poultry, giblets and stuffing | 165°F | — |
| Leftovers and casseroles | 165°F | — |
| Fully cooked ham, to reheat | 140°F (USDA-inspected plant) / 165°F (others) | — |
FSIS explains that color and firmness aren't reliable signs that food has reached a safe temperature, and that a thermometer is the only reliable way to confirm it [2]. The TP-03B manual also prints its own temperature chart, and some of its figures run higher than these USDA minimums. We go by the USDA chart. Our post on safe cooking temperatures goes further.
Placement. FSIS says to put the probe in the thickest part of the food, away from bone, fat or gristle. For thin foods like patties, chops or thin chicken breasts, insert it through the side until the tip reaches the center. In whole poultry, check the innermost thigh, the innermost wing and the thickest part of the breast. For thermistor-type digital thermometers like this one, FSIS lists a depth of at least 1/2 inch [2]. The TP-03B manual adds: if the tip touches bone or heavy fat, or isn't deep enough, take a second reading [5].
This is a spot-check tool. The manual says not to leave it in an oven, or in anything hotter than 572°F for more than a minute. If you want a probe that stays in a roast while it cooks, you need a leave-in or wireless model. And because this one can't be calibrated, a unit that fails the ice-water check has to go back under warranty or be replaced.
How to set it up and keep it up
This is the manual's routine plus the FSIS accuracy check, summarized.
Battery in, probe washed day one
Fit one AAA battery, matching the + and − marks. Clean the steel tip with a warm, soapy sponge or cloth, then rinse and dry it. Don't dunk the body in water.
Ice-water check day one, then now and then
FSIS method: fill a large glass with ice, add drinking water and stir. Put at least 2 inches of the probe in the water, not touching the glass, and wait at least 30 seconds. It should read 32°F. If it reads off, remember the offset or contact TempPro. There is no adjustment on this model.
Read, wait, wipe every use
Pop the probe out, press the power button, and insert the tip as described above. Wait for the number to settle. Wipe the tip between foods, and rinse it with cold water to cool it between readings.
Wash and store folded after cooking
FSIS says to wash thermometers with hot, soapy water, carefully by hand, and not to immerse most of them. Fold the sharp probe back into the body before putting it away.
Price and where it is sold
On Sep 30, 2026 the listing showed the Bright Red TP-03B at $9.99, In Stock. It was sold by TempPro HOME (a third-party seller) and shipped from Amazon, with a free 30-day refund or replacement return window. TempPro's own site listed the same model at $19.99 that day. The printed manual describes a one-year limited warranty, while TempPro's product page advertises three years after registration. Keep your receipt and register it. The only running cost is a AAA battery. Prices change; this is a dated snapshot.
Who should look elsewhere
- Anyone who wants a thermometer that can be recalibrated. TempPro's own comparison table points to its TP620 for that, and for a waterproof body.
- Anyone who wants to monitor a roast or smoker without opening the door. A leave-in probe or wireless thermometer is built for that; this one isn't.
- Anyone who rinses tools under the tap. The TP03B has no waterproof rating.
- Anyone who wants to know room temperature and humidity. That is the TP50 hygrometer (LV2), not this probe.
Sources
- USDA Food Safety and Inspection Service. Safe Minimum Internal Temperature Chart. Last updated Apr 14, 2025. FSIS blocks automated requests, so we read it on Sep 30, 2026 through the Internet Archive copy of Sep 26, 2026. link
- USDA Food Safety and Inspection Service. Food Thermometers (placement, calibration, care, thermometer types). Last updated Mar 21, 2025; read Sep 30, 2026 through the Internet Archive copy of Sep 26, 2026. link
- NSF. Certified food equipment listings, iTronics Co., Ltd (NSF/ANSI 2, Digital Meat Thermometer TP-03B). Accessed Sep 30, 2026. link
- TempPro. TempSwift PLUS TP03B product page, specifications and comparison table. Accessed Sep 30, 2026. link
- TempPro. TP-03B instant-read thermometer user manual (English/French). Accessed Sep 30, 2026. link (PDF)
- FoodSafety.gov. Safe Minimum Internal Temperatures chart (cross-check). Read Sep 30, 2026 through the Internet Archive copy of Sep 29, 2026. link
This entry is general information about a household product, not medical advice. Household air, water and kitchen products are not medical devices. Follow the manufacturer's manual for installation, use and maintenance.