Thermapen® Professional Thermometer Mk4

Thermapen® Professional Thermometer Mk4

4.90 out of 5
(48 customer reviews)
SKU: 7529 Categories: ,

$199.00 $175.00

or 4 payments of $43.75 with Afterpay  Learn More

The Thermapen Professional thermometer (formerly known as MK4) is a state of the art digital cooking thermometer. This professional quality instrument is so fast that it’s commonly referred to as the “Lamborghini” of food thermometers.  New features make the Thermapen MK4 better, faster and easier to use than ever.

  • Patented, automatic 360° rotational display
  • Readable display in the left or right hand
  • Auto intelligent backlight
  • Waterproof to IP66/67
  • Improved battery life of 3000 hours

Made in England





Made by hand in England
, the Thermapen Professional Mk4 is faster and more accurate than any other cooking thermometer on the market.
It used advanced technology and includes a number of innovative features.

Thermapen MK4 Professional

The patented 360° self-rotating display can be used in any position, in either hand. The unit incorporates an intelligent backlit display sensing light levels, automatically turning the backlight on/off in varying light conditions. The motion-sensing sleep mode automatically turns the Thermapen Mk4 on/off when set down or picked up, maximising battery life – 3000 hours in normal use.

The casing is washable and includes ‘Biomaster’ additive that reduces bacterial growth and the ergonomic rubber seal minimises the risk of the ingress of water, dust or food.

As well as being waterproof to IP67/67, it is still ‘probably’ the fastest reading contact thermometer on the market today. The true temperature of a product can be tested in just three seconds. The Thermapen Mk4 incorporates a reduced tip, stainless steel, food penetration probe (Ø3.3 x 115 mm) that conveniently folds back through 180° into the side of the instrument when not in use.

The Thermapen 4 is powered by a single AAA battery with a life expectancy of 3000 hours in normal use, without the backlight. Both low battery (icon) and open circuit indication are displayed, when applicable. Each Thermapen 4 is supplied with a FREE traceable certificate of calibration.

The SuperFast Thermapen 3 was the UK’s number one selling food thermometer – and now it has got even better with the new SuperFast Thermapen 4. The Thermapen 4 measures temperature over the range of -49.9 to 299.9 °C (-58.0 to 572.0°F) and offers the perfect combination of speed, accuracy, and convenience of use.




With care, your new Themapen should give many years of reliable service. The Manufacturer extends a 2 Year Warranty on the device and a 6 Month Warranty on the Probe. It is important to remember that the probe is a very sensitive instrument. Things that can damage it include, pushing it into frozen meat or actually holding the tip of the probe on the grill surface.  Please read ETI’s  Product Guarantee Terms below.  In the event of a Warranty Claim, please contact The Perfect Steak Company first. We will advise how best to proceed. Important additional information is also shown on our Warranty’s Page.

The Product Guarantee does not cover damage caused by fair wear and tear, abnormal storage conditions, incorrect use, accidental misuse, abuse, neglect, misapplication or modification or use with non-ETI Hardware or Software.

PDF Downloads



Please be advised that some models of induction cooktops can create a temporary interference with digital electronic thermometers when they are used nearby. The amount of interference and the best solution will depend on the model of the cooktop.

Here are some solutions that should get a reading:

  • Remove food from the cooktop to take a quick reading away from the magnetic field
  • Remove the pan from the cooktop which will break the magnetic field
  • Briefly turn off the induction cooktop during the reading

Additional information

Weight 0.47 kg
Dimensions 24 × 14 × 4 cm

Black, Blue, Green, Grey, Orange, Pink, Purple, Red, White, Yellow


What makes the Thermapen so fast compared to other thermometers?

The main reason is the professional thermocouple technology that we use instead of mass-produced thermistor technology. Thermocouples are recommended by the most food standards agencies for measurement of cooked meat products and thin portions. We also use a reduced-diameter needle tip on the probe. Comparable professional meters cost £140 to £300 for the electronics and a similar probe! 

How long should my Thermapen's batteries last?

Thermapen 4 battery life is 3000 hours. In the battery compartment you can enable and disable the auto-off feature. The auto-off feature will extend the life of the batteries. See your owner's manual for details.

Will the Thermapen tell me when my meat is done?

Not exactly. Instead it (very quickly) tells you the actual temperature and you decide if that is "done". We can give you the guidelines for food safety but you should consult your favorite cookbooks, TV shows and recipes for advice not only on safe temperatures but the best cooking temperatures for flavour and texture. Also remember that individual preference is very important.

Where should I place the probe tip to see if it's cooked?

When testing if your meat is cooked, the coldest part will be the very center of the thickest portion. With larger foods, you can take quick readings with your thermometer in several locations to verify that the entire portion is done. If you are chilling a food, the center of the thickest part will be the last to cool.  Penetrate the food you are checking with the probe and place the very tip of the probe where you want to measure.

I've seen cheaper thermometers, why pay more for a Thermapen?

In use there's a big difference. Don't take our word for it. Check our reviews to read the many reasons written by others. Cheaper thermometers are limited by the technology that they use. These can be mass produced for just a few pennies to a few pounds. On the other hand, the Thermapen is hand-assembled and hand-tested in the UK and uses a professional thermocouple circuit design. This design costs more to make than cheaper, less capable thermometers.

Biomaster protection

Biomaster antimicrobial technology is incorporated in the majority ETI products during the manufacturing process, ensuring lifelong protection against the risk of bacterial cross contamination. As well as being harmful to health, outbreaks of food poisoning can damage brands, and the reputation of stores, food producers and restaurants.

The risk of food-borne contamination is widespread, existing in restaurants, bars, hotels, supermarkets, hospitals, schools, aircraft, cruise ships and your home. Anywhere where food is made, prepared or eaten.

Biomaster treated products have been proven to reduce the growth of food borne bacteria such as E.Coli, Salmonella and Campylobacter by up to 99.99%, so by choosing an ETI product with Biomaster additive, you are protected 24 hours a day, every day.

What is Biomaster?

Biomaster Antimicrobial Technology is the leading range of safe, effective and permanent additives for the control of harmful bacteria, making any surface cleaner and more hygienic for its entire lifetime.

Proven to quickly reduce bacteria by up to 99.99% Biomaster is an effective means of reducing the growth of MRSA, E.Coli, Salmonella Campylobacter, Legionella and over 50 other species.

Incorporated into the body material of your ETI product, Biomaster becomes an integral part of it, providing durable, lifelong protection against the threat of cross contamination. 

How does it work?

The active ingredient in Biomaster is silver. Silver has been used in its pure form for many centuries to prevent the growth of bacteria.

Incredibly durable, long lasting and highly active, when Biomaster is added during manufacture it is dispersed throughout the product casing, will not wash off and will last for its entire lifetime. Biomaster provides antimicrobial protection without allowing bacteria to develop resistance.


Biomaster has 3 different modes of action:

Silver ions bind to the cell surface; 
This disrupts the cell and prevents cell growth.

The silver ions are attracted to the Thiol groups in the cell enzymes; 
This prevents the bacterium producing energy.

Silver ions interrupt the cell DNA; 
This prevents DNA replication and new cell formation.


The Biomaster 3 stage mode of action does not allow bacteria cells to develop resistance, making Biomaster future proof and highly resistant against antibiotic resistant species such as MRSA.

48 reviews for Thermapen® Professional Thermometer Mk4

  1. 5 out of 5

    Aman Yadav (store manager)

    Must have for everyone. Great tool for cooking by ETI UK.

  2. 5 out of 5

    Michael Paul (verified owner)

    It works!

  3. 5 out of 5

    David Cockerham (verified owner)

  4. 4 out of 5

    Jenness Gardner (verified owner)

  5. 3 out of 5

    Melissa Norris (verified owner)

    Right product sent but internal (i.e. MK4 Thermapen box) arrived damaged

  6. 5 out of 5

    Peter Petrass (verified owner)

  7. 5 out of 5

    Jim Goodwin (verified owner)

    Great service as always, Thermapen arrived 2 days after I ordered it. Many thanks, I’ll be back.

  8. 5 out of 5

    Jamie Pratt (verified owner)

  9. 5 out of 5

    Andrew B. (verified owner)

    I wish to add an update to my previous review, it is configurable between C and F, however the packaging does state “C only not suitable for the US market”, however upon looking up the downloadable PDF from the Perfect Steak Co. and following the instructions, all is good, it is the perfect addition to my Low and Slow BBQ Arsenal to ensure I can produce the best ‘Q’ possible, many thanks!!

  10. 5 out of 5

    Louise Heggie (verified owner)

  11. 5 out of 5

    Heather M. (verified owner)

  12. 5 out of 5

    Mary H. (verified owner)

    Prompt service

  13. 5 out of 5

    Jeremy (verified owner)

  14. 5 out of 5

    Michael T. (verified owner)

    Because I had a short time frame for obtaining the Thermapens, I telephoned and was put straight through to sales office. All questions answered promptly and appropriately and they even checked physical stock for me. Very helpful indeed so order placed, confirmed and goods dispatched quickly with free shipping. Fantastic! Thank you.

  15. 5 out of 5

    Victor D. (verified owner)

    As advertised, Does take a reading in under 3 sec. You can customise the display to suite your preferences.

  16. 5 out of 5

    Anonymous (verified owner)

    Dank AF 10/10

  17. 5 out of 5

    Damian Santomauro (verified owner)

  18. 5 out of 5

    Anonymous (verified owner)

  19. 5 out of 5

    Marcelle (verified owner)

    Fabulous and functional

  20. 5 out of 5

    Michael Cleave (verified owner)

  21. 5 out of 5

    Andrew Mackenzie (verified owner)

  22. 5 out of 5

    shellie doyle (verified owner)

  23. 5 out of 5

    Anonymous (verified owner)

  24. 5 out of 5

    Blair (verified owner)

    Great product. Great service. Delivery in a flash. Very impressed overall. Thank you.

  25. 4 out of 5

    Darius (verified owner)

  26. 5 out of 5

    Gary C. (verified owner)

    Also easy to use in the count up and count down all set up and ready for me to use

  27. 5 out of 5

    Christopher Souter (verified owner)

    Fantastic service, and fantastic product!

  28. 5 out of 5

    Peter (verified owner)

    Great so far. I like that this is backed by a real accessible company with a 2 year warranty. Reading reviews for the Javelin Pro competitor is recommended – you will see that it basically does everything the Thermapen does at a much cheaper price – and then according to several reviewers it then fails with no easy way to get a replacement under warranty.

  29. 5 out of 5

    derek wilson (verified owner)

    Great thermometer and great service

  30. 5 out of 5

    Tom Schwarz (verified owner)

    Just got it today, haven’t used it yet but it looks great. Looking forward to moving to the next level in food presentation.

  31. 5 out of 5

    Ron Walsh (verified owner)

    Easy to find, efficient service, was exactly what I was after. Service was excellent.

  32. 5 out of 5

    Angus Fatchen (verified owner)

    These guys went to the trouble of ordering in the colour I wanted and express shipping it to me to get it in time. Above and beyond for a great product!

  33. 5 out of 5

    Fiona H. (verified owner)

    My husband has wanted a thermapen for ages and finally got it. He is so excited to smoke his brisket this weekend to use it.

  34. 4 out of 5

    Des J. (verified owner)

    Great service. Great purchase.

  35. 5 out of 5

    Andrew Hansen (verified owner)

    Great product & very fast & efficient online transaction. Prompt dispatch.

  36. 5 out of 5

    Daryl S. (verified owner)

    Fast delivery, Thermapen works great, only used it once so far on roast, found cooking instructions over cooked which couldn’t measure before so helps to understand my oven.

  37. 5 out of 5

    Marilou Grimes (verified owner)

  38. 5 out of 5

    Nathan Harris (verified owner)

    The quality is evident before you even open the box. Got exactly what I wanted and what I paid for.

  39. 5 out of 5

    Margaret (verified owner)

  40. 5 out of 5

    Sally Wood (verified owner)

  41. 5 out of 5

    Brendan (verified owner)

  42. 5 out of 5

    Malcolm F. (verified owner)

    love it

  43. 5 out of 5

    Rebecca H. (verified owner)

  44. 5 out of 5

    Sylvia Stevens (verified owner)

  45. 5 out of 5

    Paige (verified owner)

    It arrived quickly and safely. I liked that there was an extra sheet of info about the thermometer added which was useful without having to delve into the manual.

  46. 5 out of 5

    Peter (verified owner)

    Ordered Monday, delivered Wednesday. Fantastic!

  47. 5 out of 5

    Scott Carey (verified owner)

  48. 5 out of 5

    Vicki (verified owner)

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