ThermoWorks Thermapen® ONE

We carry the red and blue models. Call us or visit our store to purchase this item.

GTIN: 5024368187994 SKU: THS-235-447 Categories: , ,
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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

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Our resident pitmasters have the experience necessary to help you choose a smoker or grill with confidence. Visit us at one of our dedicated barbecue supply stores in Greencastle, Pennsylvania and Frederick, Maryland.

Prefer to talk on the phone? Call us at 717-643-0039 or 240-439-4778.

Get directions to our store in Greencastle, PA.

Get directions to our store in Frederick, MD.

Additional information

Weight 0.25 lbs

-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)


5 years


Includes NIST-traceable calibration certificate


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