Thermoworks Thermapen ONE

With full readings in ONE second or less, Thermapen ONE approaches the speed of thought—allowing you to focus exclusively on the quality of your work. Never has an instrument been able to achieve such speed and accuracy without sacrificing durability and usability…until now.

ONE. Second. Readings.
Thermapen ONE almost moves at the speed of thought…allowing you to focus exclusively on the quality of your work.

More Accurate
With an improved accuracy spec of ± 0.5°F (± 0.3°C), you’ll know your lightning fast Thermapen ONE readings are always accurate, as well.

Brighter Backlight
The automatic backlight is brighter and the light sensor is more sensitive to changes in ambient lighting conditions.

5-Year Warranty
The newly designed rugged, waterproof case features a 5-year warranty against defects.

We sell ThermoWorks products in-store only.

GTIN: 5024368187994 SKU: THS-235-447 Categories: , , , ,
  • Directions to store


With full readings in just one second, Thermapen ONE is in a category by itself when it comes to “instant-read” thermometers. Thermapen ONE achieves a new standard of accuracy, as well—now accurate to ±0.5°F (±0.3°C)—so you know your readings are correct. To achieve this level of performance without resorting to algorithms or mathematical adjustments, Thermapen ONE truly pushes the boundaries of sensor and electronic measurement engineering.

  • New: Unparalleled speed with full temperature readings in less than one second
  • New: Industry leading accuracy to half a degree: ± 0.5°F (±0.3°C)
  • New: Brighter intelligent backlight display automatically illuminates in low-light and when the sensor window is covered
  • New: Easy access battery housing uses one common AAA battery for a 2,000-hour battery life
  • New: Five-year warranty
  • Motion-Sensing Sleep and Wake Mode: intuitively turns on and off—or when picked up or in use and off when set down to save battery
  • Patented 360° auto-rotating display uses accelerometer technology to intuitively turn right-side up
  • Shockproof, dustproof, and waterproof with an IP67 rating for water-tight seals
  • Foldaway design protects probe when not in use
  • Biomaster Antimicrobial Silver Ion Technology reduces microbial growth
  • Hand washable
  • Display temperatures in °F or °C, 1° or 0.1° resolution
  • Each Thermapen ONE includes a NIST-traceable calibration certificate verifying accuracy to national standards

The new Thermapen ONE includes professional level features at an affordable price, including an auto-rotating display, which uses accelerometer technology to detect screen motion/orientation for use in either hand (similar to smartphone orientation); a battery-saving sleep/wake mode; fully waterproof IP67 design; new brighter automatic backlight for use at night or in low light; 2,000-hour battery life using one AAA battery with new easy-access battery housing; and included NIST-traceable calibration certificate for increased confidence in its performance. Thermapen ONE lets everyone “seek perfection” when cooking at home, in the BBQ pit, or for daily use in professional restaurants, to measuring critical temperatures in labs, food processing plants, grocery stores, and more.

We sell ThermoWorks products in-store only.

Additional information


-58.0 to 572.0°F (-49.9 to 299.9°C)


±0.5°F (±0.3°C) from -4 to 248°F (-20 to 120°C) otherwise ±1.8°F (±1.0°C)


Factory set to 1° (user reconfigurable to 0.1°)

Response Time

Full reading in 1 second (0.2 seconds time constant)*


4.3 L inches, High Performance Type K Thermocouple


1 H x 1.54 W inches (25 H x 39 W mm) LCD, rotates 360°, Intelligent Backlight

Sleep Mode

10 to 180 seconds, user-selectable (user reconfigurable to disable)

Water Resistance


Operating Range

–4 to 122°F (–20 to 50°C), max ambient limits of Thermapen body


1.5 volt AAA, 2,000 hours typical (without backlight)


6.1 W x 1.7 H x 0.74 D inches (156 W x 48 H x 19 D mm)


0.25 lbs (115g)


5 years


Includes NIST-traceable calibration certificate


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Meadow Creek Barbecue Supply is a specialty BBQ equipment and supply store in Lancaster County, Pennsylvania.

Get Directions
140 W Main St in New Holland
Phone: 717-355-0779

Thermoworks Thermapen ONE
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