Thermapen® ONE Instant-Read Thermometer

£65.00 ex VAT

£78.00 inc VAT

Thermapen ONE food thermometer for fast, accurate temperature readings

  • Reaches temperature in just 1 second
  • High accuracy of ±0.3 °C
  • 5-year guarantee
  • Auto-rotating display
  • Waterproof to IP67
  • Auto-intelligent backlit display
  • Motion-sensing sleep mode
  • Free traceable calibration certificate
  • Meets the European Standard EN 13485

Loved by professional chefs worldwide, the Thermapen ONE digital instant-read thermometer is the superior tool for food safety plans like HACCP


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UKAS 3 point - instrument & probe (-18, 0, +70°C) *probe required for calibration

UKAS 3 point - instrument & probe (-18, 0, +70°C) *probe required for calibration

UKAS 5 point -instrument & probe (-18, 0, +40, +70, +100°C) *probe required for calibration

UKAS 5 point -instrument & probe (-18, 0, +40, +70, +100°C) *probe required for calibration


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In stock
Product code: 235-487
Biomaster Protected Made in UK BRCGS

Thermapen ONE features

The Thermapen instant-read thermometer's large display shows precise temperature measurements with a 0.1 °C resolution. It features a wide temperature range of -49.9 to 299.9 °C.

Both low battery (icon) and open circuit indications are displayed when applicable. Each Thermapen is powered by a single AAA battery and has a life expectancy of 2000 hours. The Thermapen One is fully configurable using buttons in the battery compartment. Here you can lock the display position, disable auto-sleep mode, switch between °C and °F readings, or choose between a 1° and 0.1° resolution.

Thermapen® is a registered trademark in the UK (2025607), EU (008449571) and the USA (3898535).

It is also protected by German Utility Patent DE202013103605 (U1), EC Regd.Des.No. 002535161-0003 and EC Regd.Des.No. 002535161-0005.
The automatic 360° rotational display is protected by UK Patent No. GB 2504936 and USA Patent No. US 9470560

Loved by professional chefs worldwide, the Thermapen ONE digital instant-read thermometer is the superior tool for food safety plans like HACCP

Unrivalled speed and accuracy

The Thermapen ONE is currently the fastest instant-read thermometer on the market, reading temperatures in just one second. This is perfect for cooking items such as steaks and confectionery which can become overdone in seconds. It's also ideal for taking quick daily temperature checks as part of health and safety plans like HACCP.


This reliable meat thermometer has a high accuracy of ±0.3 °C (between -19.9 and 119.9 °C) and is supplied with a free traceable calibration certificate, so you can be confident in the accuracy of your readings.

Designed and made in Britain

The Thermapen ONE is designed and built by hand at our factories in Worthing, West Sussex. Supplied with a generous five-year guarantee, you can be confident that your food thermometer is built to last. 

The Thermapen ONE thermometer has a variety of screen features designed with busy chefs in mind.

The screen will automatically switch on/off when opening or closing the probe and when the instrument is picked up or set down. This maximises the battery life and saves time on fiddling with tricky buttons.

The cool white backlight will automatically turn on in low lighting, making reading temperatures clear in any setting. The display also automatically rotates 360°, making it easy to read from any angle and in either hand.

Maintaining a hygienic instant-read thermometer is essential for food businesses. The Thermapen ONE casing includes Polygiene BioMaster product protection to reduce bacterial growth. It is also fully waterproof to IP67, enabling it to be submerged in water for thorough cleaning.

Folding meat thermometers are ideal for protecting your probe from damage while making it easy to transport and keep on hand throughout the day. The Thermapen ONE features a reduced tip, stainless steel penetration probe that rotates 180° and folds into the side of the instrument for safe storage. 

With 10 colours available, the Thermapen thermometers can become part of your HACCP and due diligence procedures. Colour coding allows you to use your probe thermometer for different food types or preparation areas. This reduces the risk of cross-contamination, which is key for managing foodborne illnesses and allergens.

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Product Details

Data sheet

Range:-49.9 to 299.9 °C
Operating Range:-20 to +50 °C
Resolution:0.1 °C or 1 °C - user selectable
Accuracy:±0.3°C (-19.9 to 119.9 °C)±0.4°C (-49.9 to 199.9 °C) otherwise ±1 °C
Battery:1 x 1.5 volt AAA
Battery Life:2000 hours (without backlight), 100 hours backlight on time
Sensor Type:K thermocouple
Display: 14.3mm (horizontal) x 11.85mm (vertical) LCD
Dimensions:48.2mm x 156.2mm x 19.3mm
Weight:115 grams
Case Material: ABS plastic includes Biomaster product protection
Country of Manufacture: United Kingdom
Guarantee: five years
Water/Dust Resistance: IP67 protection
Measurement Scale: Celsius/Fahrenheit
Certification: FREE traceable calibration certificate
Probe Diameter:ø3.3mm Fast Response
Probe Length:110mm
Conforms to Standard:EN 13485
UKCA / CE Status:CE 1639 Approved
Reviews (29)
Thermapen One Instructions

Instructions for Thermapen One Thermometer

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Thermapen One Guidebook

Guidebook for Thermapen One thermometer

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Thermapen One CofC

Thermapen One Certificate of Conformity

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