How It Works. The CPT wakes up in Instant Read mode. Turn it on by removing it from the charger or Booster. It takes 3-4 seconds to accurately report the temperature at the pointy end. Instant read turns off when you set a target temp on the Display

How It Works <img src="https://attachments.gorgias.help/0l9dY2Vrjz2rZkLp/hc/z8QbV2PqGm7ogePy/2025012914-a9959a07-d692-4eb2-8041-861566fb8eec-44ba9cea-b19e-46a4-b6a8-4e145f87643b.png" style="width: 692px;" class="fr-fic fr-dib"><h3 id="instant-read-mode">Instant Read Mode</h3>The CPT wakes up in&#xA0;Instant Read&#xA0;mode. Turn it on by removing it from the charger or Booster.It takes 3-4 seconds to accurately report the temperature at the pointy end. Instant read turns off when you set a target temp on the Display or app (Predictive Cooking Mode). <img src="https://attachments.gorgias.help/0l9dY2Vrjz2rZkLp/hc/z8QbV2PqGm7ogePy/2025012914-6f0e3ab2-2e22-4f27-a086-a88e0ed3a40c-0580fe03-26d7-4769-a18f-93188d62b381.png" style="width: 692px;" class="fr-fic fr-dib"> <h3 id="predictive-cooking-with-display">Predictive Cooking (with Display)</h3><ul><li>Insert the Predictive Thermometer to at least the min line.&#xA0;</li><li>Press m- and s+ buttons to set the &#x201C;cooking to&#x201D; temperature.</li><li>Press &#x201C;start&#x201D; &#x2013; the &quot;cooking to&quot; temp will stop blinking.</li><li>Apply heat (oven, smoker, grill, frying pan, etc&#x2026; you get the idea).</li><li>The Display shows progress by indicating % of cooking completed.</li><li>At about 33% a countdown will appear: &#x201C;ready in.&#x201D; That&#x2019;s the prediction!&#xA0;</li><li>When that number hits 00:00, an alarm will sound to let you know your food is ready.</li><li>Enjoy!</li></ul> <h3 id="predictive-cooking-with-app">Predictive Cooking (with App)</h3><ul><li>Insert the CPT to at least the min line.&#xA0;</li><li>Tap &quot;predict&quot; on the main screen.</li><li>Set your temp, then tap &quot;begin prediction.&quot;</li><li>Then follow the same steps as above.</li><li>To choose between C&#xBA; and F&#xBA;: tap the three dots (right edge of the app, near&#xA0;ready in).</li></ul> &#x1F6D2; Shop&#xA0;<a href="https://combustion.inc/products/predictive-thermometer-gen2" rel="noopener noreferrer" target="_blank">2nd-Generation Predictive Thermometer</a>&#x1F6D2; Shop <a href="https://combustion.inc/products/predictive-thermometer-gen2-wifi-display" rel="noopener noreferrer" target="_blank">2nd-Generation Predictive Thermometer &amp; WiFi Display&#xA0;</a> [Related keywords: power management, battery, turn on/off, standby, sleep, charging]

How It works: Predictive Thermometer

For use with Combustion mobile apps. The 2nd-generation wireless Combustion Predictive Thermometer (CPT) uses an evenly-spaced array of 8 sensors to give you Total Temperature Awareness™ of everything that’s happening inside and around your food. Ins

For use with Combustion mobile appsThe 2nd-generation wireless Combustion Predictive Thermometer (CPT) uses an evenly-spaced array of 8 sensors to give you&#xA0;Total Temperature Awareness&#x2122; of everything that&#x2019;s happening inside and around your food.&#xA0;Inside the thermometer itself? Advanced processing that will find the coldest bit of your food (TrueCore&#x2122; sensors), and tell you exactly when it will be ready-to-eat.It&#x2019;s also the only thermometer that measures surface temp (TrueSurface&#x2122; Sensors). And it&#x2019;s the only one that can tell you when your food is safe to eat - before it overcooks!<h3 id="up-to-900&#xBA;f">Up to 900&#xBA;F</h3>Nitrogen-flushed, and hermetically sealed with a brazed ceramic bond, the new CPT has the&#xA0;highest ingress protection possible&#xA0;(IP69K). It&#x2019;s suitable for vacuum-sealing (hello sous vide!) and can tolerate extreme cooking temps of up to 900&#xBA;F (482&#xBA;C).<h3 id="add-a-wifi-accessory-for-unlimited-connectivity">Add a WiFi accessory for unlimited connectivity</h3>Every CPT is compatible with other Combustion Tools including the&#xA0;WiFi Display, and&#xA0;Giant Grill Gauge. These optional tools connect directly to existing WiFi networks so you can monitor your food from anywhere with internet. Data uploaded over WiFi is available through any connected Combustion App - anywhere in the world from your basement to Bali or the Shetland Isles.&#xA0;<h3 id="2nd-generation-upgrades-new">2nd Generation upgrades (NEW)</h3><ul><li style="font-size: 16px;">Hermetic brazed seal for IP69K protection - the highest waterproof rating</li><li style="font-size: 16px;">900&#xBA;F ambient temperature limit</li><li style="font-size: 16px;">Recommended for all types of cooking including deep-frying, sous vide, and flame-grilling</li><li style="font-size: 16px;">Watch your cook from anywhere &#x2013; unlimited connectivity (with WiFi Booster and/or WiFi Display)</li></ul><h3 id="plus-all-the-scientific-magic-of-the-original-predictive-thermometer">Plus all the scientific magic of the original Predictive Thermometer</h3><ul><li style="font-size: 16px;">8 sensors, evenly spaced for&#xA0;Total Temperature Awareness&#x2122;</li><li style="font-size: 16px;">SafeCook&#x2122; informs you when food reaches US government safety standards &#x2013; while it&#x2019;s still tender and delicious&#xA0;</li><li style="font-size: 16px;">4&#xA0;TrueCore&#x2122; sensors precisely locate + track the lowest internal temp</li><li style="font-size: 16px;">3&#xA0;TrueSurface&#x2122; sensors&#xA0;monitor the true cooking temp at the surface of your food&#xA0;</li><li style="font-size: 16px;">TrueAmbient&#x2122; sensor isolates the air temp immediately surrounding your food</li><li style="font-size: 16px;">Physics-based Prediction Engine&#x2122; models heat-dynamics and evaporative cooling to accurately predict cook time, even when cooking low and slow</li></ul>Requires the Combustion App (free), WiFi Display or Range-Extending Display (not included). &#x1F6D2;&#xA0;<a href="https://combustion.inc/products/predictive-thermometer-gen2-wifi-display" rel="noopener noreferrer" target="_blank">Shop Predictive Thermometer &amp; WiFi Display</a>&#xA0;&#x1F6D2;&#xA0;<a href="https://combustion.inc/products/predictive-thermometer-gen2-wifi-booster-wifi-display">Shop Predictive Thermometer with WiFi Booster &amp; WiFi Display&#xA0;</a>

Predictive Thermometer (2nd Generation)

Related: Specs and Tech: Predictive Thermometer (1st Generation)

<h3 id="isPasted">Temperature Accuracy + Limits</h3><table style="width: 100%;"><tbody><tr><td style="width: 50%; vertical-align: middle;">Upper Half Temperature Limits&#xA0; </td><td style="width: 50%; vertical-align: middle;">-5 to 900&#xBA;F (-20 to 482&#xBA;C)&#xA0; </td></tr><tr><td style="width: 50%; vertical-align: middle;">Lower Half Temperature Limits&#xA0; </td><td style="width: 50%; vertical-align: middle;">-5 to 220&#xBA;F (-20 to 105&#xBA;C)&#xA0; </td></tr><tr><td style="width: 50%; vertical-align: middle;">Ambient Sensor - Peak Temp Limit&#xA0; </td><td style="width: 50%; vertical-align: middle;">900&#xBA;F (482&#xBA;C)&#xA0; </td></tr><tr><td style="width: 50%; vertical-align: middle;">Upper Sensors - Continuous Temp&#xA0; </td><td style="width: 50%; vertical-align: middle;">750&#xBA;F (399&#xBA;C)&#xA0; </td></tr><tr><td style="width: 50%; vertical-align: middle;">Accuracy&#xA0; </td><td style="width: 50%; vertical-align: middle;">&#xB1;0.4&#xB0;F (0.2&#xB0;C) from 14-149&#xB0;F (-10 to 65&#xB0;C) &#xB1;0.5&#xB0;F (0.3&#xB0;C) from 149-185&#xB0;F (65 to 85&#xB0;C) &#xB1;0.9&#xB0;F (0.5&#xB0;C) from 185&#xB0;F (85&#xB0;C)&#xA0; </td></tr><tr><td style="width: 50%; vertical-align: middle;">Response Time&#xA0; </td><td style="width: 50%; vertical-align: middle;">Full reading in 4-5 seconds&#xA0; </td></tr><tr><td style="width: 50%; vertical-align: middle;">Data logging&#xA0; </td><td style="width: 50%; vertical-align: middle;">5 second intervals&#xA0; </td></tr><tr><td style="width: 50%; vertical-align: middle;">Upper sensors&#xA0; </td><td style="width: 50%; vertical-align: middle;">4 high temperature thermistors&#xA0; </td></tr><tr><td style="width: 50%; vertical-align: middle;">Lower sensors&#xA0; </td><td style="width: 50%; vertical-align: middle;">4 zero-calibration IC sensors&#xA0; </td></tr></tbody></table> <h3 id="isPasted">Physical Dimensions</h3><table style="width: 100%;"><tbody><tr><td style="width: 50%; vertical-align: middle;">Product Size (Min Insertion Depth)&#xA0; </td><td style="width: 50%; vertical-align: middle;">1.97 in / 50 mm&#xA0; </td></tr><tr><td style="width: 50%; vertical-align: middle;">Product Size (Probe Length)&#xA0; </td><td style="width: 50%; vertical-align: middle;">3.8 in / 97 mm&#xA0; </td></tr><tr><td style="width: 50%; vertical-align: middle;">Product Size (Diameter)&#xA0; </td><td style="width: 50%; vertical-align: middle;">0.19 in / 4.8 mm&#xA0; </td></tr><tr><td style="width: 50%; vertical-align: middle;">Water Resistance&#xA0; </td><td style="width: 50%; vertical-align: middle;">IP69K&#xA0; </td></tr><tr><td style="width: 50%; vertical-align: middle;">Hermetic Seal&#xA0; </td><td style="width: 50%; vertical-align: middle;">Hermetic ceramic-to-metal brazed joint&#xA0; </td></tr><tr><td style="width: 50%; vertical-align: middle;">Charger voltage limit + draw&#xA0; </td><td style="width: 50%; vertical-align: middle;">5V limit, 3.4V draw&#xA0; </td></tr><tr><td style="width: 50%; vertical-align: middle;">Charger&#xA0; </td><td style="width: 50%; vertical-align: middle;">Cradle or Booster&#xA0; </td></tr></tbody></table> <h3 id="isPasted">Wireless</h3><table style="width: 100%;"><tbody><tr><td style="width: 48.9162%; vertical-align: middle;">WiFi - Mode&#xA0; </td><td style="width: 51.0838%; vertical-align: middle;">802.11 b/g/n (2.4 GHz) - requires WiFi accessory&#xA0; </td></tr><tr><td style="width: 48.9162%; vertical-align: middle;">WiFi - Options&#xA0; </td><td style="width: 51.0838%; vertical-align: middle;">WiFi Display WiFi Booster Giant Grill Gauge&#xA0; </td></tr><tr><td style="width: 48.9162%; vertical-align: middle;">BLE Range&#xA0; </td><td style="width: 51.0838%; vertical-align: middle;">330ft+ (100m+)&#xA0; </td></tr><tr><td style="width: 48.9162%; vertical-align: middle;">BLE Range - Obstructed&#xA0; </td><td style="width: 51.0838%; vertical-align: middle;">10-100ft (3-30m)&#xA0; </td></tr><tr><td style="width: 48.9162%; vertical-align: middle;">BLE Range - with Repeater&#xA0; </td><td style="width: 51.0838%; vertical-align: middle;">330ft (100m) added per hop&#xA0; </td></tr><tr><td style="width: 48.9162%; vertical-align: middle;">MeatNet enabled&#xA0; </td><td style="width: 51.0838%; vertical-align: middle;">Yes&#xA0; </td></tr><tr><td style="width: 48.9162%; vertical-align: middle;">BLE protocol&#xA0; </td><td style="width: 51.0838%; vertical-align: middle;">BLE 5.4 Long Range PHY Coded Support&#xA0; </td></tr></tbody></table> <h3 id="isPasted">Power</h3><table style="width: 100%;"><tbody><tr><td style="width: 48.8439%; vertical-align: middle;">Battery Life - Standby&#xA0; </td><td style="width: 51.1561%; vertical-align: middle;">40 days standby (up to)&#xA0; </td></tr><tr><td style="width: 48.8439%; vertical-align: middle;">Battery life - Cook Mode&#xA0; </td><td style="width: 51.1561%; vertical-align: middle;">90+ hr (at 5 sec refresh rate)&#xA0; </td></tr><tr><td style="width: 48.8439%; vertical-align: middle;">Battery Life - Instant Read&#xA0; </td><td style="width: 51.1561%; vertical-align: middle;">24 hr (up to)&#xA0; </td></tr><tr><td style="width: 48.8439%; vertical-align: middle;">Battery - Time to Charge&#xA0; </td><td style="width: 51.1561%; vertical-align: middle;">25 min for full charge&#xA0; </td></tr><tr><td style="width: 48.8439%; vertical-align: middle;">Battery - Quick Charge&#xA0; </td><td style="width: 51.1561%; vertical-align: middle;">5 min = 24 hr cook time (at 5 sec refresh rate)&#xA0; </td></tr><tr><td style="width: 48.8439%; vertical-align: middle;">Battery - Type&#xA0; </td><td style="width: 51.1561%; vertical-align: middle;">LTO (Lithium Titanate Oxide)&#xA0; </td></tr><tr><td style="width: 48.8439%; vertical-align: middle;">Battery - Durability&#xA0; </td><td style="width: 51.1561%; vertical-align: middle;">90% capacity retention after 1000 recharging cycles&#xA0; </td></tr></tbody></table> <table id="isPasted"></table><h3 id="other">Other</h3><table style="width: 100%;"><tbody><tr><td style="width: 48.9884%; vertical-align: middle;">Apps&#xA0; </td><td style="width: 50.8671%; vertical-align: middle;">iOS, Android, iPadOS, macOS (M1 or newer)&#xA0; </td></tr><tr><td style="width: 48.9884%; vertical-align: middle;">Communication protocol&#xA0; </td><td style="width: 50.8671%; vertical-align: middle;">Combustion BLE Probe Spec&#xA0; </td></tr><tr><td style="width: 48.9884%; vertical-align: middle;">Open Source - Software&#xA0; </td><td style="width: 50.8671%; vertical-align: middle;">iOS and Android libraries, example apps, supporting documentation open source under MIT License&#xA0; </td></tr><tr><td style="width: 48.9884%; vertical-align: middle;">Open Source - Permissions&#xA0; </td><td style="width: 50.8671%; vertical-align: middle;">use, copy, modify, merge, publish, distribute, sublicense, and/or sell copies&#xA0; </td></tr><tr><td style="width: 48.9884%; vertical-align: middle;">Certifications&#xA0; </td><td style="width: 50.8671%; vertical-align: middle;">Bluetooth, FCC, ROHS, REACH, IC-ID + ICED, CE-Red, CE-EMC, SRRC, Food Contact Declaration&#xA0; </td></tr></tbody></table> Related:&#xA0;<a href="https://combustioninc.gorgias.help/en-US/805667-3811dc6f5f0d43a5b7617c0fcfde7ab4" rel="noopener noreferrer" target="_blank">Specs and Tech: Predictive Thermometer (1st Generation)</a>

Specs and Tech: Predictive Thermometer (2nd Generation)

Know your Thermometer's charging and battery behavior with the table below:. For a full charge, please plug in your thermometer for 25 minutes. [Related keywords: power management, battery, turn on/off, standby, sleep, charging]

Know your Thermometer&apos;s charging and battery behavior with the table below:For a full charge, please plug in your thermometer for 25 minutes<table style="margin-right: calc(19%); width: 81%;"><tbody><tr><td style="background-color: rgb(252, 205, 73);">Status</td><td style="background-color: rgb(252, 205, 73);">Mode</td><td style="background-color: rgb(252, 205, 73);">Battery</td></tr><tr><td style="background-color: rgb(252, 205, 73);">In charger</td><td>Standby</td><td>30-40 days</td></tr><tr><td style="background-color: rgb(252, 205, 73);">In Booster</td><td>Standby</td><td>180 days</td></tr><tr><td style="background-color: rgb(252, 205, 73);">Loose</td><td>Instant Read</td><td>24 hr</td></tr><tr><td style="background-color: rgb(252, 205, 73);">In food</td><td>Predictive Cook</td><td style="line-height: 1.15;">28-30 hr </td></tr></tbody></table> <h1 id="isPasted"><a href="https://combustion-inc.myshopify.com/pages/faq?hcUrl=%2Fen-US%2Fhow-it-works-predictive-thermometer-694485" rel="noopener noreferrer" target="_blank">How It works: Predictive Thermometer</a></h1> [Related keywords: power management, battery, turn on/off, standby, sleep, charging]

Charging / Battery Life: Predictive Thermometer

A more durable, fully hermetic seal and higher maximum temperature range. Using high-temperature ceramic-to-metal brazing, we create a true hermetic seal between the ceramic handle and steel tube. Unlike conventional seals or adhesives that can degra

<h2 id="whats-in-the-box">What&apos;s in the box?</h2><ul id="isPasted"><li style="font-size: 16px;">Second generation Predictive Thermometer with charging/standby case</li></ul><h2 id="isPasted">What changed with the 2nd generation Combustion Predictive Thermometer?</h2>A more durable, fully hermetic seal and higher maximum temperature range.Using high-temperature ceramic-to-metal brazing, we create a true hermetic seal between the ceramic handle and steel tube. Unlike conventional seals or adhesives that can degrade over time, this brazing process creates a permanent metallurgical bond at the molecular level.&#xA0;The result is a completely hermetic seal that&apos;s tested to IP69k standards &#x2013; the highest ingress protection rating available.Key improvements:<ul><li style="font-size: 16px;">True hermetic seal - safe for vacuum sealing, sous-vide, and deep-frying</li><li style="font-size: 16px;">Extended temperature range - high-temp region now reaches 900&#xBA;F (482&#xBA;C), up from 600&#xBA;F</li><li style="font-size: 16px;">Enhanced sensor performance - relocated ambient sensor provides faster, more accurate readings</li><li style="font-size: 16px;">More durable construction while maintaining all original smart features.</li></ul>We also introduced built-in WiFi to the second generation accessories (WiFi Display, WiFi Booster, Giant Grill Gauge).<h2 id="isPasted">Does this mean the old ones are obsolete?</h2>Not at all! If you have an original Predictive Thermometer that&apos;s working great for you, don&apos;t worry!We&apos;ll continue supporting it with new app features and firmware upgrades, just like always. And your 1st gen Combustion Predictive Thermometer (CPT) even works with 2nd generation WiFi accessories. Just add one (WiFi Display, WiFi Booster, or Giant Grill Gauge) to your existing set to take advantage of your home WiFi network and watch your temps remotely from anywhere.The 1st gen Predictive Thermometer is still fantastic for most cooking setups. While the original design performed well overall, we saw an opportunity to improve the durability of the main seal. Our second-generation design uses high-temperature ceramic-to-metal brazing to create a permanent, hermetic seal between the ceramic handle and steel tube.The 2nd gen CPT offers enhanced durability, improved ambient temperature sensing through a relocated sensor, and an extended temperature range, now reaching 900&#xBA;F in the high-temp region (up from 600&#xBA;F).For most everyday cooking applications, the 1st generation CPT continues to work great.<h2 id="isPasted">What about WiFi?</h2>Any Combustion Predictive Thermometer (CPT) can be used with any of our new WiFi accessories (WiFi Display, WiFi Booster, Giant Grill Gauge) to connect to WiFi and send live cook data to anywhere in the world with internet access. Be sure to get the newest firmware to use this feature!WiFi&apos;s higher transmission power (more than 10x that of Bluetooth) allows for excellent coverage throughout your home and, through your network, anywhere with internet access. This is especially useful when cooking from your basement or other locations where lower-power signals might struggle.Why isn&apos;t WiFi in the thermometer itself?It comes down to optimizing battery life while maintaining performance. WiFi draws significantly more power than Bluetooth, and the thermometer&apos;s battery must be small enough to fit near the probe tip. By using Bluetooth&apos;s energy-efficient design, we can achieve industry-leading battery life (over 92 hours) while still maintaining rapid data updates - every 5 seconds during normal cooking, and up to 5 times per second when it matters most.Using a separate tool for WiFi connectivity means the thermometer can dedicate its power to what matters: collecting data, calculating predictions, running algorithms, SafeCook&#x2122;, and all the other features that make the CPT special.&#xA0;This design choice helps us maintain the longest functional battery life of any wireless thermometer, even while processing more data than our competitors.<h2 id="isPasted">Anything else I should know?</h2>Oh my yes.&#xA0;The Combustion Predictive Thermometer was designed to be a tool for professional chefs, but to also be easy to use by cooks at any skill level.&#xA0;Read as much as you can. The deeper you dive, the more I think you&#x2019;ll appreciate the genius (and occasional madness) of what we&#x2019;re doing.&#xA0;We&#x2019;ve been very fortunate to have found a community of like-minded cooks who appreciate the extra insight and deep data our tools can provide. And we&#x2019;re regularly surprised by the new and unusual uses that people are finding for the Combustion Predictive Thermometer (Beehives? Raw milk?).&#xA0;If you like cooking and science and the science of cooking, welcome. You&#x2019;re in the right place.&#xA0;If you&#x2019;re not sure about the CPT yet, do your research. Watch <a href="https://www.youtube.com/playlist?list=PLPgRgG9IjQprv1YzQZxUJ8u3m1ZLfnGbD" target="_blank">Chris&#x2019; videos</a> - they&#x2019;re full of surprising cooking science and practical techniques. Read the posts on <a href="https://www.reddit.com/r/combustion_inc/" target="_blank">our subreddit</a> - there&#x2019;s a lot of really specific discussion about how to use the thermometer and the people there are always pushing the limits.&#xA0;There&#x2019;s also a ton of info on our <a href="https://combustion.inc/pages/faq?hcUrl=%2Fen-US" target="_blank">help center</a>, searchable by topic and keyword.&#xA0;Or you could always just jump in - we stand behind all our products with a 30-day money back guarantee.&#xA0;If the Combustion Predictive Thermometer doesn&#x2019;t improve your cooking outcomes, or your process, or if it&#x2019;s just not your bag for whatever reason, return it for a full refund of the purchase price.

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