1. Introdución
The ThermoWorks Thermapen Mk4 is a professional-grade thermocouple cooking thermometer designed for rapid and accurate temperature measurements. It is engineered for reliability and ease of use in various culinary applications, from home cooking to professional kitchens. This manual provides essential information for the proper setup, operation, and maintenance of your Thermapen Mk4.

The image shows the red ThermoWorks Thermapen Mk4, a professional thermocouple cooking thermometer. The device features a digital LCD screen displaying a temperature of 135.0°F, and its stainless steel probe is folded out, ready for use. The ergonomic design includes a grey grip along the sides.
2. Que hai na caixa
Upon unboxing your ThermoWorks Thermapen Mk4, please ensure all the following components are present:
- Thermapen Mk4 Thermometer Unit
- Certificado de calibración
- Stainless Steel Probe (integrated)
- 1 x AAA Battery (pre-installed or included separately)
- 5-Year Guarantee Information
3. Configuración
3.1 Instalación da batería
The Thermapen Mk4 typically comes with a AAA battery pre-installed. If the display does not activate upon opening the probe, or if the battery indicator appears low, follow these steps to replace the battery:
- Localice o compartimento da batería na parte traseira da unidade.
- Using a small Phillips head screwdriver, carefully remove the screw securing the battery cover.
- Remove the cover and insert one new AAA battery, ensuring correct polarity (+/-).
- Coloque a tapa da batería e fíxaa co parafuso.
3.2 Uso inicial
The Thermapen Mk4 is ready for use immediately after battery installation. Simply unfold the probe to activate the unit. The display will illuminate, and the thermometer will begin taking readings.
4. Instrucións de funcionamento
4.1 Encendido/apagado
- Encendido: Unfold the probe from the body of the thermometer. The unit will automatically power on and the backlight will activate.
- Apagado: Fold the probe back into the body of the thermometer. The unit will automatically power off. The Thermapen Mk4 also features an intelligent auto-off function that conserves battery life when not in active use.
4.2 Tomar unha lectura de temperatura
- Unfold the probe to power on the unit.
- Insert the stainless steel probe into the center or thickest part of the food item you wish to measure. Ensure the probe tip is fully immersed for accurate readings.
- The temperature reading will appear on the LCD screen within 2-3 seconds.
- Remove the probe from the food and fold it back into the unit to power off.

A chef is shown in a professional kitchen, holding the red ThermoWorks Thermapen Mk4 thermometer to measure the internal temperature of food cooking in a stainless steel pan. The thermometer's display shows a reading of 158 degrees. This illustrates the practical application of the device in a culinary setting.
4.3 Función de retroiluminación
The Thermapen Mk4 features an automatic intelligent backlight that activates in low-light conditions or when the unit is held at certain angles, ensuring readability in various environments.
4.4 Cambio das unidades de temperatura (°F/°C)
To switch between Fahrenheit (°F) and Celsius (°C), refer to the small button located inside the battery compartment. Use a pen or a small pointed object to press this button to toggle between the two units.
5. Mantemento
5.1 Limpeza
To ensure the longevity and hygiene of your Thermapen Mk4, follow these cleaning instructions:
- Wipe the probe with an antibacterial wipe or a damp pano e xabón suave despois de cada uso.
- Clean the body of the thermometer with a damp pano.
- Do not immerse the entire unit in water or place it in a dishwasher. The Thermapen Mk4 is splash-proof but not fully submersible.
5.2 Substitución da batería
Replace the AAA battery when the low battery indicator appears on the display. Refer to section 3.1 for detailed instructions.
5.3 Almacenamento
Store the Thermapen Mk4 with the probe folded into the body to protect the probe tip and conserve battery life. Keep it in a dry place, away from extreme temperatures.
6 Solución de problemas
- No Display/Unit Not Turning On:
Ensure the probe is fully unfolded. Check the battery. Replace with a new AAA battery if necessary, ensuring correct polarity. - Lecturas inexactas:
Ensure the probe tip is fully inserted into the food. Avoid touching bones or the bottom of pans, which can affect readings. If issues persist, the unit may require recalibration (contact support). - A luz de fondo non funciona:
The backlight activates automatically in low light. If it consistently fails in dark conditions, check battery level. - Lecturas lentas:
While the Thermapen Mk4 is designed for rapid readings, extremely cold or dense items may take slightly longer. Ensure the probe is clean and free of debris.
7. Especificacións
| Número de modelo do artigo | Thermapen One |
| Fonte de enerxía | Battery Powered (1 x AAA battery included) |
| Tipo de visualización | Pantalla LCD |
| Material exterior | Plástico |
| Instrucións de coidado do produto | Limpar |
| Dimensións do paquete | 8.31 x 4.45 x 1.02 polgadas |
| Peso do elemento | 6.84 onzas |
| Especificación Met | EN 13485 |
8. Garantía e soporte
8.1 Información da garantía
The ThermoWorks Thermapen Mk4 comes with a 5-year guarantee against defects in components or workmanship. This warranty covers the repair or replacement of the product at the manufacturer's discretion, provided the unit has not been subjected to misuse.

This image displays the ThermoWorks Thermapen Mk4 thermometer alongside its Certificate of Calibration. The certificate details the instrument's serial number, ambient temperature during calibration, and measurement readings, verifying the accuracy of the device. The thermometer itself shows a reading of 73.0 degrees.
8.2 Atención ao cliente
For technical assistance, warranty claims, or further information regarding your Thermapen Mk4, please contact ThermoWorks customer support directly. Refer to the contact information provided in your product packaging or visit the official ThermoWorks websitio.





