is supported by our Pitmaster Club. Also, when you buy with links on our site we may earn a finder’s fee. Click to see how we test and review products.

FireBoard Spark Instant Read Thermometer Reviewed And Rated

Our Testing Practices

All of our reviews are done independently by our team of testers and are in no way influenced by advertising or other monetary compensation from manufacturers. Click here to learn more about our unbiased product review process.

Share on:
Fireboard Spark instant read thermometer Best New Products Logo for 2022

The FireBoard Spark is a groundbreaking hybrid of instant-read capability and a cabled temperature probe, coupled with Bluetooth and Wi-Fi connectivity that allows it to remotely monitor another FireBoard product as well. The temperatures can be displayed on the rotatable display, and controlled via a web interface or smartphone app.

The Spark has a foldable probe that acts as the instant-read instrument. Response times are quick, but not the fastest observed. The temperature display is seen in the image above. While taking a reading, it will capture and display stabilized temperatures and give haptic feedback to the user in the form of a quick buzz, letting her/him know that a final temperature has been obtained. You can plug in a cabled probe and get the same display, allowing you to monitor a food’s internal temperature. With the instant-read probe opened and a cabled probe inserted, you will see both temperatures displayed and labeled. Having both an instant-read and a leave-in probe built into one thermometer is a new feature that this reviewer hasn’t seen in other products. The usual features like Fahrenheit/Celsius switches and backlighting are also found in this unit.

Using the same phone app – Android or iOS – that operates the original FireBoard or the FireBoard 2, you can configure the Spark to talk to your home router. Using this capability allows you to set temperature alarms and display temperature vs. time plots of the cabled probe. You cannot monitor the instant-read probe using the app. If you have one of the original FireBoards, you can read the temperature of each channel of that unit directly on the Spark’s display, instead of tying up your phone, by selecting “sync mode” from the setting menu. You can also monitor and control the Spark via the dashboard on the company’s website.

The shape of the Spark allows it to rest at a 45° angle, making it easy to read. The orientation of the display depends on the temperatures displayed: for the instant-read alone, it has four positions; for other modes, it has two. You can select how the display illuminates: bright numbers on a dark background, or vice-versa. You can also choose whether to see temperatures in whole numbers or tenths of a degree. The temperature scale is determined by the source: you can display the local probes in either Fahrenheit or Celcius, but if you’re monitoring a remote FireBoard, the scale displayed on the Spark is the one that has been set on the remote. ALas, the display is the one area where we were not thrilled. In very bright sunlight it is difficult to read.

The thermometer contains a 2600 mAh Li-ion battery that is rechargeable via a supplied USB C cable. FireBoard claims 12 hours of operation on a full charge. There are magnets in the housing that allow attachment to a cool ferromagnetic surface.

The Spark is capable of scanning NFC tags. At the time of this review, this feature hasn’t been fully documented, so I will only mention that it has this feature. More to come later.

The Spark is attractively finished in a red face with hard rubberized back surroundings. A rubber flap covers the charging and probe ports, giving the unit an IP66 environmental rating, meaning it will withstand light spray, but not submersion or placement in dishwashers. It meets NSF “easily cleanable” standards for food safety.

Tech support can be obtained from the company’s website, via e-mail, or by telephone. Warranty is one year on the Spark. Cabled probes, which are NOT included with the Spark, carry a six-month warranty. See the FireBoard website for probe options.

We have been consistently impressed with FireBoard’s products. They not only meet high-quality standards, but their performance has been excellent as well. You will pay a price for high standards, but you’ll only pay it once. We give Spark a Platinum Medal for pushing the envelope of product capability while maintaining high standards of design and workmanship.

Haven't found what you want?
Click the buttons below to search our complete database of reviews:

Product Information:

  • Thermometer Function:
    Hand Held/Instant Read, Leave in Food, Leave in Cooker, Wireless Remote
  • Item Price :
    *Price Subject To Change
  • Where to buy (buying from this supplier supports this website):
  • Probe:
    Length: 4.31 (110mm), diameter: 0.137" (3.5mm), tip: 0.060 (1.5mm)
  • Battery Type:
    Li-Ion rechargeable
  • Battery Life:
    12 hrs (mfgr.)
  • Safe Operating Range:
    -13 to 140°F (-25 to 60°C)
  • Min & Max Temp:
    -58 to 572°F (-50 to 300°C)
  • Display Precision:
    0.1° or 1°
  • Actual Temp at 32 Degrees:
  • Actual Temp at 130 Degrees:
  • Actual Temp at 225 Degrees:
  • Actual Temp at 325 Degrees:
  • Speed from 32 to 212 Degrees:
  • Speed from 32 to 212 Degrees:
  • Numbers Display Size:
    0.7" (18mm)
  • Water Resistance Rating:
  • Weight:
    5 oz (145 g)
  • C/F Switch:
    Built in CF switch
  • Backlight:
    Built in Backlight
  • Auto shutoff:
    Has Auto Shutoff
  • Color Options:
  • Thermometer Sensor:
  • Thermometer Connection:
  • App:
    Apple and Android
  • Included:
    Thermometer, USB charging cable, instructions, cert. of calibration
  • Available Accessories:
    Additional probes
  • Alarms:


Related articles


Published On: 1/6/2022

  • Bill McGrath, Chief Thermometer Reviewer - Bill McGrath is's Thermometer Maven. He has sophisticated equipment, an electrical engineering degree from Cornell University, and an MBA (almost) from UC Berkeley. Despite being mostly retired, he is still the person responsible for developing and updating all of ExxonMobil's training modules.


High quality websites are expensive to run. If you help us, we’ll pay you back bigtime with an ad-free experience and a lot of freebies!

Millions come to every month for high quality tested recipes, tips on technique, science, mythbusting, product reviews, and inspiration. But it is expensive to run a website with more than 2,000 pages and we don’t have a big corporate partner to subsidize us.

Our most important source of sustenance is people who join our Pitmaster Club. But please don’t think of it as a donation. Members get MANY great benefits. We block all third-party ads, we give members free ebooks, magazines, interviews, webinars, more recipes, a monthly sweepstakes with prizes worth up to $2,000, discounts on products, and best of all a community of like-minded cooks free of flame wars. Click below to see all the benefits, take a free 30 day trial, and help keep this site alive.

Post comments and questions below


1) Please try the search box at the top of every page before you ask for help.

2) Try to post your question to the appropriate page.

3) Tell us everything we need to know to help such as the type of cooker and thermometer. Dial thermometers are often off by as much as 50°F so if you are not using a good digital thermometer we probably can’t help you with time and temp questions. Please read this article about thermometers.

4) If you are a member of the Pitmaster Club, your comments login is probably different.

5) Posts with links in them may not appear immediately.



Click to comment or ask a question...


These are not paid ads, they are a curated selection of products we love.

All of the products below have been tested and are highly recommended. Click here to read more about our review process.

Use Our Links To Help Keep Us Alive

Many merchants pay us a small referral fee when you click our “buy now” links. This has zero impact on the price you pay but helps support the site.