Wireless thermometer comparison: Combustion Inc., Meater + & ThermoWorks RFX - LONG POST

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Jim6820

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Combustion Inc. (2nd Gen.) vs Meater Plus vs Thermoworks RF - Warning: this post is a bit long!

After having used all three probes (though only once for the new 2nd Gen CIPT) here are some initial reactions.

First, any of the three would probably be an OK choice for the most part. I did have some connection issues early in the cook Christmas Eve with the new 2nd Generation Combustion Inc, probes but it settled down after about an hour. I need to do some more checking on whether the probes and boosters are properly linked, but I think they are. The Thermoworks RFX has been absolutely rock-solid in its connection; never a blip. The Meater 2+ has also been very solid in its connectivity.

One other issue experienced with the new CIPT units is that one of the booster/charger units does not hold the probe in securely and even the slightest movement causes the probe to pop up and stop charging. I will be contacting CI for a replacement.

SIZE

The probes on all three units are close to the same diameter, with the new CIPT being the thinnest at 0.190”/4.8 mm. Second is the TW RFX at 0.210”/5.4 mm. The Meater 2+ comes in at 0.236”/6 mm. In reality, there’s not enough difference to be concerned about.

Probe lengths range from 3.8” to 5.4”, with the CIPT being the shortest and Meater 2+ being the longest. Minimum insertion depths range from 1.97” (CIPT) to 3.185” (RFX).

A brief comment here on the optional numbered metal flags available for the CIPT units; mehhh! They clip onto the CIPT OK, but can be knocked loose a bit too easily. “Adjustment” with a pair of round-nose pliers may improve this and I will be trying it. The numbers are cutouts in the metal flag and are a bit hard to see as well. These flags could probably be used with the other two probes after a “plier adjustment,” but I don’t think I would bother. I use the colored TW silicone rings for probe identification and they work fine for me.

TEMPERATURE LIMITS

Maximum ambient temp limits are 527F (Meater 2+), 900F (CIPT) and 1000F (RFX). The maximum allowable temperature below the insertion point indicator is 212F (Meater 2+ and RFX) and 220F (CIPT).

ACTUAL USE OBSERVATIONS

So much for the technical stuff; how do they work on the grill? As stated earlier, all three have worked OK (after the CIPT stabilized), but the RFX has stood out on connectivity and has been absolutely rock solid. The lower frequency RF signal really does get out of the cooking chamber better.

Accuracy of all three (compared to my verified TW Signals unit) have been within two degrees Fahrenheit in cooking use. That’s as close as I would expect given that when comparing them, the probes could not be placed in the EXACT same spot. And, all three probes were within a tenth of a degree when checked with ice-water bath and altitude-adjusted boiling water baths.

The free apps available for the three probes each provide all the basic functions you would expect, but are different in appearance and functionality. Since I think app functionality is a subjective thing and depends a lot on personal preference, I leave that up to the user to explore and decide. I don’t use a lot of the advanced features offered (graphing, etc.) so can’t help with that.

It is worth mentioning that the ThermoWorks app is the same one that is used for other TW products like the Signals and Smoke units, You simply add the RFX probes and gateway. This means that if you already have TW products and use their app, there’s no additional learning curve.

One advanced app function that I do use is the cook completion prediction and I think the CIPT app excels in that area. TW is reportedly working on a similar prediction feature for its RFX. Having an idea of when a cook will complete, based on protein temperature rise rate, is very useful; at least for me. I use it to adjust cook temperature up or down a bit to bring my cooks in on time. YMMV.

PRICE

One final consideration; price! And, all prices noted here are the regular ones; sale prices may alter things a bit. CIPT is the most expensive with a single probe and booster going for $179. Meater Plus comes in lowest at $130 and TW RFX is $168 including the separate RFX Gateway unit that extends the non-wifi range up to 1500’ and provides a wifi Cloud connection gateway. The CIPT “booster” provides a similar function and you can use it without the optional Display unit. Meater + uses your phone to “bridge” to the internet.

MY PERSONAL PREFERENCE

OK, I’ve rambled on long enough. If I were in the market for a wireless thermometer and was considering one of the three brands I now have experience with (No, I’m not going to buy another brand just to check it out for you! 🤣), I would opt for the ThermoWorks RFX. After more experience with the CIPT (and getting a replacement “booster” that actually secures my probe) I might reconsider, but I don’t think so at this point. The RFX’s stellar connectivity with its lower frequency RF signal, temperature accuracy and useable app will be hard to beat. Since they are all paid for, I will probabably keep all three units, but the RFX will be my go-to, at least for now.

FULL DISCLOSURE

For those wondering, I have absolutely no financial or other connection to Combustion Inc, Meater, or ThermoWorks beyond being a user of products that I personally purchased from them with my own funds.
 
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Jim, thanks for an excellent review. I was waiting to see your observations. After being an early adopter of the first generation CI unit (returned it), I was holding back on another purchase. Maybe it is time for me to give the RFX a try. I had connectivity challenges with the CI unit I returned.
 
@Jim6820 does the RFX connect to an app that your Tworks wired probes connect too? That would seem to be a plus, plus for me?

Edit: thanks for the review!
 
Jim, great report. Very complete.

I tried a pair of meaters that came with a high end Traeger pellet grill I owned for 6 months. I had issues with almost everything about them (Note that these were "Traeger Meaters" not the original. I ended up getting rid of the smoker with its onboard induction burner and meaters because neither the smoker nor the probes seemed to support my cooking needs.

I have bought into the RFX system and went with the +4 option on the probe count. So far so good. I have some observations but am not ready to "publish". None of my RFX observations are negative per se, only some quirky stuff.

Jim, I always look forward to what you and your Ferrari are up to. Thanks for all you do for the community.

Wishing all here a Happy and Safe New Year.

v/r r
 
@Jim6820 does the RFX connect to an app that your Tworks wired probes connect too? That would seem to be a plus, plus for me?

Edit: thanks for the review!
Yes, it is just another device added to the same app. It is very handy to have the Signals and RFX using the same app.
 
Have you experienced you RFX probes showing inactive? I keep having this issue especially if the gateway is not attached to my Backyard Beast. Thermoworks replaced one of my probes but still happening. I’m wondering if my Gateway or its antenna is faulty? What does your signal strength for the probes read when in your Recteq? Mine show poor -102bBm with gateway attached to leg of grill.
 
Have you experienced you RFX probes showing inactive? I keep having this issue especially if the gateway is not attached to my Backyard Beast. Thermoworks replaced one of my probes but still happening. I’m wondering if my Gateway or its antenna is faulty? What does your signal strength for the probes read when in your Recteq? Mine show poor -102bBm with gateway attached to leg of grill.
I have the 4 probe set a
 
I own the RFX 4 probe set as well. I did a 9lb Prime rib for Christmas, the cook time was over the span of 26 hours. Christmas Eve, I started it out in the smoker at about 10oc am for near 5 hours until my IT was 117f. I then vac bagged the roast with the probes still inserted and the gateway was plugged in set it into a sous vide bath with the water temp @125f until 12:30pm Christmas day, then I seared it off on my HOT Weber kettle.

Perfect! The most tender prime rib I've ever done in 30 years of doing 1 or 2 every year. No loss of juices what so ever when I cut it. The probes went inactive some time Christmas morning while they were in the SV. I was not worried at all because the water temp was maintaining a solid 125f temp.

After service I plugged them back into the cradle and let then charge up. Then the app showed them green and active again.
 
Have you experienced you RFX probes showing inactive? I keep having this issue especially if the gateway is not attached to my Backyard Beast. Thermoworks replaced one of my probes but still happening. I’m wondering if my Gateway or its antenna is faulty? What does your signal strength for the probes read when in your Recteq? Mine show poor -102bBm with gateway attached to leg of grill.
I have not experienced them “showing inactive” and am guessing that means the battery is depleted. My cooks are usually 8-9 hours or less and I haven’t had a battery life issue with the RFX over those time periods.

I found that the Gateway needed an initial overnight charge to get it up to snuff. Since then, a 30-45-minute charge has been sufficient.
 
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Have you experienced you RFX probes showing inactive? I keep having this issue especially if the gateway is not attached to my Backyard Beast. Thermoworks replaced one of my probes but still happening. I’m wondering if my Gateway or its antenna is faulty? What does your signal strength for the probes read when in your Recteq? Mine show poor -102bBm with gateway attached to leg of grill.
I, too, have had some issues with disconnects. It was actually using the probes in my oven with the gateway 12 feet away. I was reading -99 dbm to -105 dbm (when i put it in a ditch oven in an oven).

Curious what signal strength everyone else is getting and how far the gateway is from the grill.
 
I own the RFX 4 probe set as well. I did a 9lb Prime rib for Christmas, the cook time was over the span of 26 hours. Christmas Eve, I started it out in the smoker at about 10oc am for near 5 hours until my IT was 117f. I then vac bagged the roast with the probes still inserted and the gateway was plugged in set it into a sous vide bath with the water temp @125f until 12:30pm Christmas day, then I seared it off on my HOT Weber kettle.

Perfect! The most tender prime rib I've ever done in 30 years of doing 1 or 2 every year. No loss of juices what so ever when I cut it. The probes went inactive some time Christmas morning while they were in the SV. I was not worried at all because the water temp was maintaining a solid 125f temp.

After service I plugged them back into the cradle and let then charge up. Then the app showed them green and active again.
Impressive.
 
Combustion Inc. (2nd Gen.) vs Meater Plus vs Thermoworks RF - Warning: this post is a bit long!

After having used all three probes (though only once for the new 2nd Gen CIPT) here are some initial reactions.

First, any of the three would probably be an OK choice for the most part. I did have some connection issues early in the cook Christmas Eve with the new 2nd Generation Combustion Inc, probes but it settled down after about an hour. I need to do some more checking on whether the probes annd boosters are properly linked, but I think they are. The Thermoworks RFX has been absolutely rock-solid in its connection; never a blip. The Meater 2+ has also been very solid in its connectivity.

One other issue experienced with the new CIPT units is that one of the booster/charger units does not hold the probe in securely and even the slightest movement causes the probe to pop up and stop charging. I will be contacting CI for a replacement.

SIZE

The probes on all three units are close to the same diameter, with the new CIPT being the thinnest at 0.190”/4.8 mm. Second is the TW RFX at 0.210”/5.4 mm. The Meater 2+ comes in at 0.236”/6 mm. In reality, there’s not enough difference to be concerned about.

Probe lengths range from 3.8” to 5.4”, with the CIPT being the shortest and Meater 2+ being the longest. Minimum insertion depths range from 1.97” (CIPT) to 3.185” (RFX).

A brief comment here on the optional numbered metal flags available for the CIPT units; mehhh! They clip onto the CIPT OK, but can be knocked loose a bit too easily. “Adjustment” with a pair of round-nose pliers may improve this and I will be trying it. The numbers are cutouts in the metal flag and are a bit hard to see as well. These flags could probably be used with the other two probes after a “plier adjustment,” but I don’t think I would bother. I use the colored TW silicone rings for probe identification and they work fine for me.

TEMPERATURE LIMITS

Maximum ambient temp limits are 527F (Meater 2+), 900F (CIPT) and 1000F (RFX). The maximum allowable temperature below the insertion point indicator is 212F (Meater 2+ and RFX) and 220F (CIPT).

ACTUAL USE OBSERVATIONS

So much for the technical stuff; how do they work on the grill? As stated earlier, all three have worked OK (after the CIPT stabilized), but the RFX has stood out on connectivity and has been absolutely rock solid. The lower frequency RF signal really does get out of the cooking chamber better.

Accuracy of all three (compared to my verified TW Signals unit) have been within two degrees Fahrenheit in cooking use. That’s as close as I would expect given that when comparing them, the probes could not be placed in the EXACT same spot. And, all three probes were within a tenth of a degree when checked with ice-water bath and altitude-adjusted boiling water baths.

The free apps available for the three probes each provide all the basic functions you would expect, but are different in appearance and functionality. Since I think app functionality is a subjective thing and depends a lot on personal preference, I leave that up to the user to explore and decide. I don’t use a lot of the advanced features offered (graphing, etc.) so can’t help with that.

One app function that I do use is the cook completion prediction and I think the CIPT app excels in that area, with RFX second and Meater third. Having an idea of when a cook will complete, based on protein temperature rise rate, is very useful; at least for me. I use it to adjust cook temperature up or down a bit to bring my cooks in on time. YMMV.

PRICE

One final consideration; price! And, all prices noted here are the regular ones; sale prices may alter things a bit. CIPT is the most expensive with a single probe and booster going for $179. Meater Plus comes in lowest at $130 and TW RFX is $168 including the separate RFX Gateway unit that extends the non-wifi range up to 1500’ and provides a wifi Cloud connection gateway. The CIPT “booster” provides a similar function and you can use it without the optional Display unit. Meater + uses your phone to “bridge” to the internet.

MY PERSONAL PREFERENCE

OK, I’ve rambled on long enough. If I were in the market for a wireless thermometer and was considering one of the three brands I now have experience with (No, I’m not going to buy another brand just to check it out for you! 🤣), I would opt for the ThermoWorks RFX. After more experience with the CIPT (and getting a replacement “booster” that actually secures my probe) I might reconsider, but I don’t think so at this point. The RFX’s stellar connectivity with its lower frequency RF signal, temperature accuracy and useable app will be hard to beat. Since they are all paid for, I will probabably keep all three units, but the RFX will be my go-to, at least for now.

FULL DISCLOSURE

For those wondering, I have absolutely no financial or other connection to Combustion Inc, Meater, or ThermoWorks beyond being a user of products that I personally purchased from them with my own funds.
Great read! Thanks for sharing that in-depth, detailed report.
 
Curious what signal strength everyone else is getting and how far the gateway is from t
I hadn’t even noticed the signal strength indicator in the advanced section, so have no idea. 🙄

Thanks for tipping me off. I will pay attention the next time I use the RFX.
 
Just purchased the 2 set of RFX probes today. Of course we are still waiting on the BFG to arrive as we sold our 700 on Sunday. Have not read a bad thing about these probes yet so looking forward to using them.
 
Thanks for the great detailed review, Jim. This is exactly what I've been wondering about, so really helpful.

One question: you mentioned the cook prediction feature for each probe. One reason I've hesitated getting the RFX yet is because I thought Thermoworks was still working on that capability, and was looking to add that perhaps in future updates or new models down the road. Has that changed, i.e. does the RFX have the predictive cook feature?

That would be awesome and would indeed make it the complete package.
 
Just purchased the 2 set of RFX probes today. Of course we are still waiting on the BFG to arrive as we sold our 700 on Sunday. Have not read a bad thing about these probes yet so looking forward to using them.
Wow! Skipping the 1400XL and going up to the BFG…from the 700. Impressive! Excited to hear about your journey with the BFG…including food porn pics.
 
Thanks for the great detailed review, Jim. This is exactly what I've been wondering about, so really helpful.

One question: you mentioned the cook prediction feature for each probe. One reason I've hesitated getting the RFX yet is because I thought Thermoworks was still working on that capability, and was looking to add that perhaps in future updates or new models down the road. Has that changed, i.e. does the RFX have the predictive cook feature?

That would be awesome and would indeed make it the complete package.
There is currently no predictive cooking feature on the RFX (just checked). It does have good range, but the battery life when reporting on 1 degree intervals is left to be desired. Its about 8-10ish hours. When set to 3 degree intervals, it is closer to 60 hours.

Thermoworks also hides a lot of information. For instance: with the RFX four pack, you have five thermometers on their cloud. If you added a 6th cloud device then you must either pay $9 a month for 6-10 cloud devices, or create an alternate account for that one device (unlinking them from your other devices).

The software is half baked, and there’s still no off-line mode.

They also don’t share that the devices do not technically charge to 100%, despite reading as such in the app. Its between 80-100%, which sounds okay on paper until you realize that your battery life could be 20% shorter on a cook, and there’s no way to know.

I’ve also found the limits of their signal from just a few feet away, despite heavily advertising they ‘never lose connection.’

As negative as all that is, and there’s more that I would qualify as less important but still a nuisance, they’re a good product as long as you’re sticking to 4 thermometers, or less. I still recommend at the intro pricing, and do trust Thermoworks to back their products up.
 
There is currently no predictive cooking feature on the RFX (just checked). It does have good range, but the battery life when reporting on 1 degree intervals is left to be desired. Its about 8-10ish hours. When set to 3 degree intervals, it is closer to 60 hours.

Thermoworks also hides a lot of information. For instance: with the RFX four pack, you have five thermometers on their cloud. If you added a 6th cloud device then you must either pay $9 a month for 6-10 cloud devices, or create an alternate account for that one device (unlinking them from your other devices).

The software is half baked, and there’s still no off-line mode.

They also don’t share that the devices do not technically charge to 100%, despite reading as such in the app. Its between 80-100%, which sounds okay on paper until you realize that your battery life could be 20% shorter on a cook, and there’s no way to know.

I’ve also found the limits of their signal from just a few feet away, despite heavily advertising they ‘never lose connection.’

As negative as all that is, and there’s more that I would qualify as less important but still a nuisance, they’re a good product as long as you’re sticking to 4 thermometers, or less. I still recommend at the intro pricing, and do trust Thermoworks to back their products up.

Thanks for the additional info, @SmokeyJoe !
 
To relook the number of probes on the free side versus the "Pro subscription" I offer the following:
https://www.thermoworks.com/content...urn4kCk3QDwDZKR3JGCplISpWPtIzg4DaCN1g2RFW5l-W

I am running the 4 probes, the gateway, and a signals set. I am maxed out at the 6 free ports. One more will cost me if I want to keep everything. See the schedule in the link.

The funniest thing I have done to a probe so far is to insert one into a Nathen's Hot Dog and then boil it in a covered stainless steel pan. Pulled the dog at a perfect 155 degrees and let it rest up to my 165 target. Yep, boiled my rfx probe.

:)

v/r r
 
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I stand corrected. You can have 6 devices, but you must go in and press three different buttons to archive, unless it's been over 24 hours 🤣

I really like the probes. They're clearly well-built and work better than most, if not all the others on the market. There are just annoyances that shouldn't be there IMHO.

I love that you did that 😂 The worst I've done is use them in a rotisserie ham and a Beef Wellington. I finished the ham in an oven and that's how I found out my oven is kryptonite to the RFX. The beef wellington was perfect, though.
 

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