RFX

Q: Can I use RFX in an air fryer?

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Q: Does RFX connect to Bluetooth or WiFi?

{"type":"root","children":[{"type":"paragraph","children":[{"type":"text","value":"RFX connects to both Bluetooth and WiFi. Use WiFi for stable readings across long ranges, or Bluetooth for remote locations. "}]}]}

Q: How close does RFX GATEWAY need to be to RFX MEAT?

{"type":"root","children":[{"type":"paragraph","children":[{"type":"text","value":"There is a 457 metre line of sight range between the RFX MEAT and GATEWAY. This means 457 metres is the maximum distance they should be apart without any obstacles between them."}]}]}

Q: What is the max temperature for the RFX MEAT probe?

{"type":"root","children":[{"type":"paragraph","children":[{"type":"text","value":"The RFX withstands ambient temperatures up to 538 °C. It reads temperatures up to 100 °C."}]}]}

Q: Is RFX accurate?

{"type":"root","children":[{"type":"paragraph","children":[{"type":"text","value":"RFX is accurate to ±0.5 °C (-10 to 100 °C). The wireless probe’s multi-sensor technology means four sensors locate the thermal centre of your cook, ensuring your meat is cooked all the way through."}]}]}

Q: Does RFX monitor pit temperature?

{"type":"root","children":[{"type":"paragraph","children":[{"type":"text","value":"The RFX Starter Kit comes with a separate Pro-Series Air Probe for ambient temperature monitoring. The wired probe plugs into the gateway and comes with a clip for attaching to your BBQ grate or oven shelf."}]}]}

Q: What is radio frequency?

{"type":"root","children":[{"type":"paragraph","children":[{"type":"text","value":"Radio frequency is a type of wireless technology used to transmit temperature readings between the RFX MEAT and RFX GATEWAY."}]},{"type":"paragraph","children":[{"type":"text","value":"It provides a strong, stable signal with long range, allowing uninterrupted monitoring — even through ovens, BBQ lids, and walls."}]},{"type":"paragraph","children":[{"type":"text","value":"Once set up, your RFX devices stay paired, so you can simply switch on and start cooking without reconnecting each time."}]}]}

Q: Is the ETI app for RFX free?

{"type":"root","children":[{"type":"paragraph","children":[{"type":"text","value":"The ETI app is free to download and use for up to 10 devices. For 10+ devices, subscriptions are available. "}]}]}

Q: Will the RFX alert me when my food is cooked?

{"type":"root","children":[{"type":"paragraph","children":[{"type":"text","value":"Yes, you can enable push notifications on the ETI app so you will get an alert when your food reaches temperature."}]}]}

Q: How long is the RFX battery life?

{"type":"root","children":[{"type":"paragraph","children":[{"type":"text","value":"The RFX MEAT battery life is up to 52 hours on a 10-minute charge (80%) or over 65 hours on a 20-minute charge (100%). "}]},{"type":"paragraph","children":[{"type":"text","value":"The battery life depends on the interval rate you select. For long cooks (15-65 hours), choose 3.0 °C/F intervals. "}]}]}

RFX wireless meat thermometer. Smart, powerful monitoring with no dropouts. Build and customise your kit for perfect cooking your way.

RFX is a wireless meat thermometer with a difference. Powered by radio-frequency wireless technology, it blasts readings through thick ovens, BBQs, and walls for seamless monitoring. Track meat and pit temperatures using the free ETI app, get alerts, and enjoy perfectly cooked meat with ease.

A close up shot of the RFX thermometer inside meat, with a yellow silicone ring around the probe

What is RFX?

RFX is a wireless temperature monitoring system for BBQs and roasts, designed for cooks who want continuous monitoring without sacrificing accuracy or reliability.

Unlike many Bluetooth-only systems, RFX uses radio-frequency technology designed for long-range, reliable monitoring during long cooks.

Sliced steak on a cutting board with an RFX thermometer next to it.

Why choose RFX?

Reliable RF wireless technology
Monitor meat and pit temperatures simultaneously
Get alerts wherever you are
Works alongside Thermapen ONE
Built by temperature measurement experts

RFX Wireless Range, Tested

Best uses for RFX

The recipes you can perfect with wireless monitoring.

Close-up of sliced beef with a hand holding a piece, on a wooden cutting board.

Low and slow

Smoke brisket and pork overnight using RFX as your guide. Get notified if your pit temperature drops, and when it’s time to wrap.

Steak

Track the whole process — from the slow smoke to the finishing sear to the all-important rest — getting it exactly how you want.

Person seasoning roast topside of beef with tarragon butter on a wooden chopping board.

Sunday roasts

Whether you’re cooking roast chicken, lamb, beef or pork — wireless tracking helps you get it just right. Perfect for feeding a crowd.

Person grilling chicken with barbecue sauce on a grill

Multi-cook feasts

Track up to 50 RFX MEAT wireless probes at once. Build your collection to monitor steaks, chicken, and slow cooks all at the same time.

Why cooks trust RFX and Thermapen

For decades, Thermapen has been trusted by professional chefs, food manufacturers, BBQ enthusiasts and home cooks who care about getting temperatures right.

Unlike many cooking gadget brands, temperature measurement is our expertise. Electronic Temperature Instruments (ETI), the company behind Thermapen, has been designing and manufacturing thermometers since 1983.

That same focus on accuracy and reliability is built into every product we sell, including RFX.

Built by experts

RFX was developed by Thermoworks, Thermapen's exclusive North American partner and leader in temperature technology.

Together, ETI and Thermoworks have spent decades helping professionals measure temperature with confidence.

Multiple white thermometers on a blue table, with hands mid build process.

Serious precison

When cooking meat, accuracy matters. A few degrees can be the difference between an overcooked steak or an undercooked chicken.

That's why Thermapen and RFX are engineered for accuracy, consistency and dependable performance in every cook.

Trusted by pros

From competition BBQ teams to passionate home cooks, Thermapen products have earned a reputation for delivering reliable results.

Whether you're smoking a brisket, roasting Christmas turkey or grilling steaks for guests, you need trusted temperatures.

Thermapen Team Temperature T-Shirt - M - TeamTemperature T-Shirt

UK support team

When you buy from Thermapen, you're backed by a UK team with decades of temperature expertise, product knowledge and customer support experience.

We're passionate about helping cooks get better results through accurate temperature measurement.

Frequently Asked Questions

Can I use RFX in an air fryer?

Yes, you can use an RFX MEAT probe inside an air fryer. It will continue to deliver readings to your device and help you cook perfect air-fried food.

Does RFX connect to Bluetooth or WiFi?

RFX connects to both Bluetooth and WiFi. Use WiFi for stable readings across long ranges, or Bluetooth for remote locations.

How close does RFX GATEWAY need to be to RFX MEAT?

There is a 457 metre line of sight range between the RFX MEAT and GATEWAY. This means 457 metres is the maximum distance they should be apart without any obstacles between them.

What is the max temperature for the RFX MEAT probe?

The RFX withstands ambient temperatures up to 538 °C. It reads temperatures up to 100 °C.

Is RFX accurate?

RFX is accurate to ±0.5 °C (-10 to 100 °C). The wireless probe’s multi-sensor technology means four sensors locate the thermal centre of your cook, ensuring your meat is cooked all the way through.

Does RFX monitor pit temperature?

The RFX Starter Kit comes with a separate Pro-Series Air Probe for ambient temperature monitoring. The wired probe plugs into the gateway and comes with a clip for attaching to your BBQ grate or oven shelf.

What is radio frequency?

Radio frequency is a type of wireless technology used to transmit temperature readings between the RFX MEAT and RFX GATEWAY.

It provides a strong, stable signal with long range, allowing uninterrupted monitoring — even through ovens, BBQ lids, and walls.

Once set up, your RFX devices stay paired, so you can simply switch on and start cooking without reconnecting each time.

Is the ETI app for RFX free?

The ETI app is free to download and use for up to 10 devices. For 10+ devices, subscriptions are available.

Will the RFX alert me when my food is cooked?

Yes, you can enable push notifications on the ETI app so you will get an alert when your food reaches temperature.

How long is the RFX battery life?

The RFX MEAT battery life is up to 52 hours on a 10-minute charge (80%) or over 65 hours on a 20-minute charge (100%).

The battery life depends on the interval rate you select. For long cooks (15-65 hours), choose 3.0 °C/F intervals.

Is the RFX MEAT dishwasher safe?

Yes, the RFX MEAT is fully waterproof to IP69K, which means it can be cleaned in a dishwasher.

How many RFX MEAT probes can I use at once?

You can connect up to 50 RFX MEAT probes to one RFX GATEWAY. Build your kit and monitor multiple meats simultaneously.

RFX

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