Introduction
The Classic Thermapen is a highly-rated instant-read thermometer designed for precise temperature measurement in various culinary applications. Trusted by professionals, it offers speed, accuracy, and durability for consistent cooking results. This manual provides essential information for the proper setup, operation, maintenance, and troubleshooting of your device.

Image: The Classic Thermapen in Cayenne Pepper Red, with its probe extended and displaying a temperature of 72.5°F.
Setup
Battery Installation
The Classic Thermapen requires 2 CR2 batteries, which are included. To install or replace batteries:
- Locate the battery compartment on the back of the unit.
- Use a small screwdriver to open the battery cover.
- Insert the 2 CR2 batteries, ensuring correct polarity as indicated inside the compartment.
- Securely close the battery cover.
Initial Use
Before first use, ensure the probe is clean. The device is ready for use once the batteries are installed. No complex calibration is required by the user, as each unit is individually tested and includes a NIST-traceable calibration certificate.
Operating Instructions
Turning On/Off
The Classic Thermapen features an automatic on/off function. Simply unfold the probe to turn the unit on. Fold the probe back into the body to turn it off and conserve battery life.
Taking a Temperature Reading
- Unfold the probe to activate the thermometer.
- Insert the stainless steel probe into the thickest part of the food item, avoiding bone or gristle.
- Hold the probe in place for 2-3 seconds until the temperature stabilizes on the digital display.
- Read the temperature displayed. The unit provides readings with an accuracy of ±0.7°F (±0.4°C).
- After use, clean the probe and fold it back into the body to turn off the device.

Image: A hand using the red Classic Thermapen to measure the internal temperature of a roasted turkey, displaying 165.2°F.

Image: A person using a red Classic Thermapen to check the temperature of meat cooking on a grill.
Versatile Applications
The Classic Thermapen is suitable for a wide range of culinary tasks, including:
- Meats (roasts, poultry, steaks)
- Fish
- Casseroles
- Breads
- Deep frying
- Candy making

Image: A hand using a grey Classic Thermapen to measure the temperature of oil in a pot for deep frying, displaying 209.3°F.

Image: A hand using a grey Classic Thermapen to measure the internal temperature of a loaf of bread baking in an oven, displaying 204.6°F.
Maintenance
Cleaning
To clean your Classic Thermapen:
- Wipe the stainless steel probe with a damp cloth and mild detergent after each use.
- Rinse the probe with clean water.
- Dry the probe thoroughly before folding it back into the body.
- The body of the thermometer can be wiped clean with a damp cloth. Do not immerse the entire unit in water.
The Classic Thermapen is designed to withstand splashes and spills (IP65 waterproof rating), but it is not recommended for full submersion.
Storage
Store the thermometer with the probe folded into the body to protect the probe and conserve battery life. Keep it in a dry place, away from extreme temperatures.
Battery Life
The Classic Thermapen offers up to 1500 hours of use on a single set of batteries, thanks to its auto on/off feature. Replace batteries when the display becomes dim or the unit fails to power on.
Troubleshooting
- No Display/Dim Display: Check battery installation. Replace batteries if necessary.
- Inaccurate Readings: Ensure the probe is inserted into the thickest part of the food and not touching bone or the cooking vessel. Allow 2-3 seconds for the reading to stabilize. If issues persist, contact support.
- Unit Not Turning On: Ensure the probe is fully unfolded. If it still doesn't turn on, check or replace batteries.
Specifications
| Feature | Detail |
|---|---|
| Model Number | THS-AMN3-646 |
| Brand | ThermoWorks |
| Color | Cayenne Pepper Red |
| Accuracy | ±0.7°F (±0.4°C) |
| Reading Speed | 2-3 seconds |
| Display Type | Digital |
| Batteries | 2 CR2 batteries (included) |
| Battery Life | Up to 1500 hours |
| Waterproof Rating | IP65 (splash-proof) |
| Outer Material | Acrylonitrile Butadiene Styrene |
| Certifications | NIST-traceable, NSF Certified |
| Included Components | Probe, calibration certificate, protective case/pouch |
| Package Dimensions | 8.27 x 4.49 x 1.06 inches |
| Item Weight | 4 ounces |

Image: A detailed diagram highlighting the key features of the Classic Thermapen, such as its large digital display, super-fast readings, long battery life, IP65 waterproof rating, and NIST/NSF certifications.
Warranty
The Classic Thermapen comes with a 2-year warranty from the date of purchase, covering defects in materials and workmanship. Please retain your proof of purchase for warranty claims. This warranty does not cover damage caused by misuse, accident, or unauthorized modifications.
Support
For further assistance, technical support, or warranty inquiries, please contact ThermoWorks customer service. Our Utah-based team is available to help with product features, troubleshooting, and general questions.
Visit the official ThermoWorks website for contact information and additional resources: www.thermoworks.com

Image: A customer service representative wearing a headset, smiling and working at a desk, symbolizing available customer care.





