
RFX™ Wireless Probe Starter Kit
SKU:TX-5600-04
Break free from spotty Bluetooth®. RFX™ by ThermoWorks is the only wireless meat thermometer you can actually rely on. Astonishingly stable, powerful, and long-range, our patent-pending radio frequency technology makes it easier than ever to monitor that brisket in real-time, from anywhere.
Unbeatable 1,500 ft line-of-sight range
Cook for up to 52 hours on a 10-minute charge
RFX outperforms shaky Bluetooth connections
Gateway monitors 50+ probes at once*
Automatically stores cooking data in the cloud
Nothing Works like ThermoWorks
Accuracy in every sensor
Roast, smoke, grill, and fry meats to restaurant-level perfection. Four hidden probe sensors are independently calibrated to find the true thermal center of your cook—and deliver ±0.9°F accuracy between 14 and 212ºF.
Precision you can trace
Each RFX MEAT probe comes with a digital certificate of calibration to certify that your instrument has been tested against international laboratory standards, including those set by the National Institute of Standards and Technology (NIST).
Ambient temperatures you can trust
Competitors’ built-in ambient sensors give inaccurate readings as cold meat acts as a heat sink, pulling heat from the metal probe and skewing the measurement of the ambient sensor by 75°F or more. Even if these sensors were accurate, they're placed in an evaporative cooling zone around the meat. This means your ambient sensor is not reading the accurate temperature of your cooker. Our Pro-Series® Air Probe plugs directly into RFX GATEWAY for precise placement and true ambient temperature measurements.
Multi-device management for businesses
RFX GATEWAY handles 50+ wireless RFX MEAT probes simultaneously, ideal for professional kitchens and large-scale operations. We’ve future-proofed RFX: Your gateway is also compatible with a whole suite of forthcoming ThermoWorks RFX products.
What the pros are saying
“I’ve been waiting two years for this. RFX will not only supplant the existing products but create a new category of reliability that doesn’t really exist.”
—Jeremy Yoder, culinary mastermind behind the “Mad Scientist BBQ” YouTube channel
“Now that’s technology you can count on.”
—Tuffy Stone, legendary pitmaster, restaurateur, and BBQ Hall of Famer
If you can dream it, RFX can do it
Monitor the internal temperature of your smoked meats from anywhere.
Get crucial updates via ThermoWorks app while roasting the holiday prime rib.
Deep-fry chicken until it’s golden on the outside and juicy inside.
Master live fire grilling with our durable probe, engineered to withstand up to 1,000ºF.
Keep tabs on the rotisserie with RFX MEAT, designed for commercial precision.
How RFX works
Communication flexibility for every cooking scenario.

1. RFX MEAT connects to RFX GATEWAY via patent-pending sub-GHz RFX wireless technology.
2. When connected to Wi-Fi, RFX GATEWAY sends data to our mobile app via ThermoWorks Cloud. Or, cook offline with a direct gateway-to-smartphone Bluetooth connection.
Go further with ThermoWorks App + Cloud

Supervise in real-time:
Track your cook from anywhere, set crucial alerts, and instantly view cloud data in our mobile app.
Access powerful data tools:
Monitor temperature highs and lows, visualize data with graphs, and make informed adjustments using the cloud.
Connect devices securely:
Lock any device to your cloud account to protect data and prevent accidentally connecting to your neighbor’s gateway.
Scale up seamlessly:
Upgrade features with a paid Cloud Pro account — required for 11+ devices. (RFX probes and gateways count as individual devices).
How RFX stacks up
Bluetooth Probes | ![]() | |
1,500 ft line-of-sight range | ![]() Bluetooth frequently drops | ![]() Move around freely while cooking |
10-minute probe charge | ![]() 50% longer charging times | ![]() Less charging, more cooking |
External ambient sensor | ![]() Doesn’t accurately measure air temps | ![]() Includes Pro-Series Air Probe for true readings |
Web-based cloud | ![]() Local app; phone must remain close by | ![]() Wi-Fi connection lets you access cook data anywhere |
Water resistance: IP69K | ![]() May not be fully waterproof | ![]() Safe in the dishwasher, deep fryer, and sous vide |
Gateway handles 50+ probes | ![]() Not suitable for commercial use | ![]() RFX scales with your needs |
Compatible with BBQ fan controller | ![]() Does one thing only | ![]() Billows® BBQ Temperature Control Fan Kit |
Shop more RFX products
Expand your kit
Connect in more places
Technical specifications


What's included
Power adaptor + USB cable
Charges RFX GATEWAY
Charging block
Charges RFX MEAT
RFX MEAT
4.69 inch probe handles external heat to 1,000ºF
RFX GATEWAY
Transmits RFX MEAT data to app and cloud
Pro-Series® Air Probe
Connects to RFX GATEWAY for accurate ambient temps
Grate clip
Allows for flexible Air Probe placement
Probe rings
Helps businesses differentiate probes
Specifications
RFX GATEWAY | |
---|---|
Probe Measuring Range | -58 to 572°F (-50 to 300°C) |
Operating Range | -13 to 122°F (-25 to 50°C) |
Accuracy | ±0.9°F (±0.5°C) from 14 to 212°F (-10 to 100°C) ±2.7°F (±1.5°C) from -58 to 14°F / 212 to 392°F (-50 to -20°C / 100 to 200°C) ±4.5°F (±2.5°C) from 392 to 572°F (200 to 300°C) |
Water Resistance | IP66 |
Battery life | Approximately 24 Hours |
Product Size | 3.5 L x 1 H x 2.2 W inches (88.5 L x 27.25 H x 55.85 W mm) |
Wireless | 802.11 b/g/n (2.4 GHz) Bluetooth** |
Warranty | 2 Years |
RFX MEAT | |
---|---|
Measuring Range | 14 to 212°F (-10 to 100°C) |
Operating Range | Internal 0 to 212°F (-18 to 100°C) External 0 to 1000°F (-18 to 538°C) |
Accuracy | ±0.9°F (±0.5°C) |
Water Resistance | IP69K |
Transmission Distance | 1,500 ft. (RFX MEAT to RFX GATEWAY) |
Sensor Type | Thermistor, 4 Sensors |
Product Size | 4.7 L x 0.21 inches dia, reduces to 0.11 inches (119 mm x 5.4 mm dia, reduces to 2.8mm) |
Approvals | US (FCC), Canada (ICC), EU (CE), AU/NZ (RCM) |
Wireless | 433Mhz radio frequency (patent pending) |
Warranty | 1 Year |
Battery Life*** | Up to 52 hours with 10 min. charge (80%) 65+ hours with 20 min. charge (Full) |
Charging Block | |
---|---|
Battery | 1.5V AAA Battery |
Charging Speed | 0-80% in 10 minutes 0-100% in 20 minutes |
Probe Charging | 175+ full charges per AAA battery |
Product Size | 5.6 L x .9 x .8 inches (143 x 23 x 20.5mm) |
* The number of probes connected at one time can be 50-70 depending on transmission rate of RFX MEAT probes. A Cloud Pro account is required to connect more than 10 devices at once.
**The Bluetooth® word mark and logos are registered trademarks owned by Bluetooth SIG, Inc. and any use of such marks by ThermoWorks is under license.
*** RFX MEAT battery life is dependent on RFX MEAT transmission rate
More Info
Reviews/Q&A
315 Ratings
1-10 of 315 Reviews
Rated 5 out of 5
Jul 25, 2025
Worked great right out of the box. Now to read the instructions...
Was not sure what to do with the 'wired' probe.
Was not sure what to do with the 'wired' probe.
Rated 5 out of 5
Jul 25, 2025
Great product!
Very easy to use. My RX probe and Thermapen registered exactly the same. Being able to use my phone and be basically anywhere make long cooks easy. Thanks for creating such a great device.
Rated 5 out of 5
Jul 24, 2025
I like it
Reliable performance right out of the box
I set up the RFX Gateway for the first time today, and I'm genuinely impressed. Pairing was quick and painless, and within minutes the unit was pulling in a very strong signal-no dropouts or hiccups, even through several interior walls.
What really won me over was the temperature accuracy. I checked it against two thermometers, and readings matched within a degree. That level of precision is exactly what I need for monitoring my cooks.
Another feature is the customizable 15-second refresh interval. Being able to dial in that rapid update rate gives me peace of mind.
Overall, for a first-time user experience, the RFX Gateway ticks all the boxes: easy setup, rock-solid connectivity, and accurate, fast-refresh. Highly recommended for anyone who wants dependable wireless monitoring.
I set up the RFX Gateway for the first time today, and I'm genuinely impressed. Pairing was quick and painless, and within minutes the unit was pulling in a very strong signal-no dropouts or hiccups, even through several interior walls.
What really won me over was the temperature accuracy. I checked it against two thermometers, and readings matched within a degree. That level of precision is exactly what I need for monitoring my cooks.
Another feature is the customizable 15-second refresh interval. Being able to dial in that rapid update rate gives me peace of mind.
Overall, for a first-time user experience, the RFX Gateway ticks all the boxes: easy setup, rock-solid connectivity, and accurate, fast-refresh. Highly recommended for anyone who wants dependable wireless monitoring.
Rated 5 out of 5
Jul 23, 2025
The best wireless probe ever
Fantastic product. Highly recommend.
Rated 5 out of 5
Jul 23, 2025
Customer service outstanding
So far so good. Little hiccup with missing part, cx service rectified and sent part out promptly.
Rated 5 out of 5
Jul 23, 2025
Worth every penny
Used it last night for the first time. Never had a steak come out that perfect! Thanks for making such a great product.
Rated 5 out of 5
Jul 22, 2025
RFX Wireless Kit
Hands down the best probes on the market! Very accurate!
Rated 5 out of 5
Jul 22, 2025
It simply just works.
I own every number of other thermometer products. This one surprised me. It just works. Its not complicated and its easy to understand. Connected flawless. Probes are easy to clean easy to charge. No issues with connection inside on ? steel offset.
Rated 4 out of 5
Jul 20, 2025
Good probe, poor battery
I like the app and the device worked well. I did seem to struggle with battery life on the probes. After about 5 hours, the probes were giving me a low battery message. Since I was only using 2 of the 4 probes, I switched them out and then they only lasted about 3 hours before my low battery alarm was going off again. This was only my first time using the new set up, so there will be a learning curve. Overall, I like the design and performance if I can get the battery life to last longer, it will be perfect.
Rated 3 out of 5
Jul 20, 2025
Eh? not perfect.
It's "fine." Switched over from the M****r block. The Thermoworks app is way clunky and less intuitive in comparison. But, the connection is better, although not perfect. Probes sometimes take forever to connect, drop out, or just disconnect randomly, although still more reliable than the M****r. They need to seriously step up the app and streamline the functionality, but it works well enough I suppose.
Have a question? Ask owners.
Start typing and see existing answers.
Why did you choose this?
I probably already know the answer but I'll ask any way. I don't suppose this will work in a piece of meat in a pressure cooker?
This will work in a pressure cooker just fine. Just make sure the probe is full inserted up to the immersion line.
It will only measure up to 212° F, but can handle up to 1000° F, is this correct?
The components of the probe, below the immersion line, can handle temperatures up to 212°F. Anything above the line can handle up to 1000°F. The food the probe is in will insulate and protect the probe as you typically don't cook many things above 212°F on the inside. If you plan to cook the internal temperature of your food hotter than 212°F, you'll need to use another product.
If I purchase the starter kit now, will I be able to use the Bluetooth Offline Mode when it becomes available?
Yes! You won't need any new hardware to accomodate "Offline Mode." It will work with this original kit.
I love using the App but is there anything in the works for a local display like using a Signels or a Smoke to show temps at the cooker?
We are planning on coming out with an RFX GATEWAY that has a display!
Can I start buy purchasing one probe, and then add more probes later on?
Yes, you absolutely can!
is it true that this requires going through thermoworks servers when being used? it cannot be used as a standalone device, without Internet connection?
To use RFX, you will need a Wi-Fi connection for the time being. We are currently working on a Bluetooth functionality that will be available in the ThermoWorks app shortly!
Why isn't the ambient temp probe wireless?
The wireless probes of today are only viable because the meat they are inserted into acts as an “infinite” insulator, keeping the batteries, PCBs, and other temperature-sensitive electronics housed inside the probe, below the immersion lines, safe from extreme temperatures. A wireless ambient temperature sensor would need to operate without an insulator, making it vulnerable to heat damage (at least at temperatures above the boiling point). Any attempt at synthetic insulation would be time-limited and could create a heat sink and/or microclimate at or near the sensor that could alter the accuracy of the representative temperature anyway.
While we'd love to deliver a wireless ambient probe, we have some physics in the way that science just can't overcome yet with the technology that's currently available.
If I have no internet, but a local WiFi and the Gateway is too far away from the phone to use Bluetooth, can the App get the temperature data directly from the Gateway or does it have to come from the Cloud?
For the moment, the data is only retrievable from the Cloud. We are close to launching an “offline mode,” but for now, it must be retrieved from the cloud.
Is the RFX probe fully submersible in hot cooking oil (350 deg F) when used in a 5 gallon turkey deep fryer?
The probe itself will need to be inserted into the turkey (or whatever else you're cooking) up to one of the immersion lines to protect the internal components. Once properly inserted in the meat, the handle can easily withstand being immersed in the frying oil.
Will predictive cooking be added to the app?
Currently, we have a feature that shows the rate of change with the temperature so you can see when your food will reach its final temperature. We are always looking for the best ways to improve, so keep an eye out for any changes within the app.
RFX™ Wireless Probe Starter Kit
$349.00
New to smoking and it got great reviews
A good friend swears by it!!
Hopefully it works!
This product the best