For a quick spot reading
Being discontinued (ThermoWorks notice, ).
Reads in 1 s, ±0.5°F.
A handheld folding-probe thermometer for a measurement at a specific moment.
Specifications from ThermoWorks's own page. We do not test equipment hands-on: fit and lift answers are our arithmetic on these figures. How we compare.
The Thermapen is an instant-read tool; the DOT monitors a suitable leave-in probe and provides an alarm. An instant reading and a continuous reading answer different questions.
| Detail | ThermoWorks Thermapen ONE | ThermoWorks DOT Simple Alarm Thermometer |
|---|---|---|
| Temperature task | Quick readings of dough and baked-loaf temperature | Stays in the loaf or oven and sounds an alarm at your set temperature |
| Accuracy (± °F, from -4 to 248 °F) | 0.5 | 1.8 |
| Detail | ThermoWorks Thermapen ONE | ThermoWorks Thermapen NANO | ThermoWorks ThermoPop 2 |
|---|---|---|---|
| What it does best | A quick spot reading | The fastest, most exact spot readings | Quick dough and loaf readings on a budget |
| Size and capacity | Reads in 1 s, ±0.5°F | Reads in 0.4 s, ±0.5°F | Reads in 2–3 s, ±1°F |
| Outside size | 6.1 × 0.74 in | 6.16 × 1.89 in | 7 × 1.8 in |
| Material | Not listed by the maker | IP67 waterproof body; Type K thermocouple probe; two built-in magnets | IP67 waterproof body; stainless probe |
| Buy | Amazon and maker | Maker | Amazon and maker |
| Brand | ThermoWorks |
|---|---|
| Type of equipment | Thermometers |
| Exterior width | 6.1 in |
| Exterior depth | 0.74 in |
| Assembled height | 1.7 in |
| Total weight | 0.25 lb |
| Retailer | ThermoWorks |
| Probe size | Length: 4.3 in; Diameter: 0.12 in; Tip diameter: 0.06 in |
| Measurement range (°F) | Minimum: -58; Maximum: 572 |
| Operating range (°F) | Minimum: -4; Maximum: 122 |
| Accuracy (°F) | Value: 0.5; Qualifier: plus-or-minus from -4 to 248 F; different outside that range |
| Response time (seconds) | 1 |
| Battery | 1 AAA; up to 2000 hours |
| Dishwasher | no |
| Ingress protection rating | IP67 |
| NIST-traceable certificate | Yes |
| Warranty (years) | 5 |
| Availability | Being discontinued (maker notice, Oct 5, 2026) |
| Care | IP67 waterproof housing; follow manufacturer care instructions. |
ThermoWorks’s product page does not give the material for this model.
An alarm thermometer keeps its meter outside the oven while a compatible probe measures inside.
A pocket instant-read thermometer: ±1°F from 14 to 208°F, readings in 2 to 3 seconds.
ThermoWorks' successor to the Thermapen ONE: readings in 0.4 s, ±0.5°F from −4 to 248°F, magnets on the back.
