Product Overview
The Thermapen ONE is a professional-grade instant-read thermometer designed for rapid and accurate temperature measurement in various culinary applications. Its robust construction and advanced features make it an essential tool for chefs and home cooks alike, ensuring food safety and optimal cooking results.

Image: The Thermapen ONE in Cayenne Pepper Red, showcasing its sleek design and digital display.
Key Features
- Unmatched Speed and Accuracy: Achieves a stable temperature reading in less than one second.
- Commercial Grade Durability: Built to withstand demanding environments with a waterproof IP67 rating.
- Superior Usability: Features a full 360-degree auto-rotating display for easy reading from any angle, and motion-sensing technology for automatic power on/off.
- Verified Precision: Each unit includes a NIST-traceable calibration certificate, guaranteeing accuracy to ±0.5°F (±0.3°C).
- Long Battery Life: Up to 2,000 hours of continuous use on a single AAA battery.
- NSF Certified: Meets rigorous standards for public health and safety, suitable for commercial use.

Image: Detailed diagram highlighting the key features of the Thermapen ONE.
Setup
Battery Installation
The Thermapen ONE comes with one AAA battery pre-installed. To access the battery compartment, locate the battery cover on the back of the device. Use a small screwdriver or coin to open the compartment, insert or replace the AAA battery, ensuring correct polarity, and securely close the cover.
Initial Use
To activate the Thermapen ONE for the first time, simply unfold the probe from its stored position. The device will automatically power on and display the ambient temperature. Ensure the probe is fully extended for accurate readings.

Image: The Thermapen ONE ready for use, demonstrating its compact size and extended probe.
Operating Instructions
Turning On/Off
The Thermapen ONE features an intelligent motion-sensing system. To turn the device on, simply unfold the probe. To turn it off, fold the probe back into its stored position. The device will automatically power down to conserve battery life.
Taking a Temperature Reading
Insert the tip of the stainless steel probe into the thickest part of the food, avoiding bone or gristle. The Thermapen ONE will provide an accurate temperature reading in less than one second. The display will update rapidly as the temperature stabilizes.

Image: Checking the internal temperature of a roasted turkey with the Thermapen ONE.
Auto-Rotating Display
The Thermapen ONE's display automatically rotates 360 degrees, ensuring the temperature reading is always upright and easy to read, regardless of how the thermometer is held. This feature is particularly useful for both right-handed and left-handed users, or when taking readings from awkward angles.

Image: The Thermapen ONE in action, demonstrating its ease of use while cooking a steak.
Maintenance and Care
Cleaning
The Thermapen ONE is waterproof (IP67 rated) and can be cleaned under running water. However, it is recommended to hand wash only. Do not submerge the entire unit for extended periods or wash in a dishwasher. Clean the probe with a damp cloth and mild detergent after each use. Ensure the probe is dry before folding it back into the casing.
Battery Replacement
When the battery indicator appears on the display, it's time to replace the AAA battery. Open the battery compartment on the back of the unit, remove the old battery, and insert a new AAA battery, observing polarity. Close the compartment securely.
Storage
For optimal protection and longevity, always fold the probe back into the casing when not in use. Store the Thermapen ONE in a dry place, away from extreme temperatures.
Troubleshooting
| Issue | Possible Cause | Solution |
|---|---|---|
| Display not turning on | Battery low or dead; Probe not fully extended. | Replace AAA battery; Fully extend the probe until it clicks into place. |
| Inaccurate readings | Probe tip not in thickest part of food; Probe damaged. | Re-insert probe into the center of the thickest part; Contact support if probe is damaged. |
| Display orientation incorrect | Device held at an unusual angle. | The display should auto-rotate. If not, try rotating the device to reset the sensor. |
Specifications
| Model Number | Thermapen ONE |
| Power Source | 1 x AAA Battery (included) |
| Accuracy | ±0.5°F (±0.3°C) |
| Read Time | Less than 1 second |
| Waterproof Rating | IP67 |
| Display Type | LCD Screen with Auto-Rotating Display |
| Outer Material | Acrylonitrile Butadiene Styrene |
| Product Care | Hand Wash Only |
| Certifications | NSF, CE, RoHS, UKCA Certified for Commercial Use |
Warranty and Support
The Thermapen ONE comes with a comprehensive 5-year warranty, covering defects in materials and workmanship. A NIST-traceable calibration certificate is included with each unit, verifying its accuracy.
For any questions regarding product features, setup, troubleshooting, or general inquiries, our dedicated Customer Care and Technical Support teams are available to assist you. They are based in American Fork, Utah, ensuring expert assistance.
Visit the official ThermoWorks website or contact their customer service for further assistance. You can also find more information at the ThermoWorks Store on Amazon.

Image: ThermoWorks Customer Care team ready to assist.

Image: ThermoWorks Product Support team providing technical assistance.





