30 DAYS OPEN PURCHASEThe simplest way to understand the WiFi Booster is this: it is the thermometer’s home. Charger, storage case, WiFi bridge and Bluetooth signal booster in one object, measuring 165 × 16 × 14 mm, slimmer than a finger.
But start with the thermometer, because that is what justifies the entire system. The Combustion Predictive Thermometer Generation 2 is one of the most technically advanced kitchen thermometers you can buy, and it differs fundamentally from other wireless options on the market. Most such thermometers measure temperature at a single point. The problem is that meat, fish and poultry are not homogeneous materials. Heat spreads unevenly from the inside and outside depending on the shape, fat content and density of the food, the oven’s temperature profile and where you happen to have placed the probe. A single measuring point gives you a number, not a picture of what is actually happening inside the food.
Combustion’s probe contains eight sensors. Four TrueCore® sensors are positioned in the tip and lower third and measure the temperature inside the food. The construction is deliberate: the four sensors always identify the coldest point in the food regardless of how the probe is angled or where it is positioned in the meat, something a single tip sensor simply cannot do. Three TrueSurface™ sensors sit in the upper section of the probe and measure actual surface temperature, which is crucial for knowing when the surface is caramelising correctly or when the crust on a steak is ready for turning. The eighth sensor, TrueAmbient™, is positioned by the handle and measures the air temperature in the oven or barbecue, separately from the heat of the food. Together, the eight provide what Combustion calls Total Temperature Awareness®: a complete real-time picture of the temperature profile from centre to surface to surroundings, all in the same device.
That is half of what makes this thermometer exceptional. The other half is the Physics-based Prediction Engine™, the algorithm that runs in real time against the sensors’ continuous stream of data. It models heat flow inside your particular food under your particular conditions, calculates how the temperature will develop and tells you exactly how much time remains until the desired core temperature is reached. It compensates for carryover cooking, the fact that the temperature inside the meat continues to rise after it has been removed from the oven, and tells you exactly when to take it out so that it finishes at the right temperature. At the same time, SafeCook™ calculates bacterial reduction according to USDA-FSIS and FDA food safety standards and indicates exactly when the food is microbiologically safe to eat without having been overcooked.
The construction takes no shortcuts. The probe is 4.8 mm in diameter and 97 mm long, hermetically sealed with a ceramic-to-metal braze rather than a rubber seal that swells and deteriorates over the years. Its IP69K protection rating is the highest that exists and means the thermometer can withstand direct high-pressure spraying with 80°C water. It is vacuum-tight and handles sous vide at 55°C for 48 hours just as well as a charcoal barbecue at 300°C or a deep fryer at 180°C. The temperature range extends up to 482°C, covering every conceivable cooking method including a wood-fired oven and a cast-iron pan at maximum heat. The accuracy of the four internal sensors is ±0.2°C within the range relevant to cooking. The battery uses LTO, Lithium Titanate Oxide, cell chemistry, a choice that prioritises durability over capacity: 90% of the original capacity remains after 1,000 charging cycles. Five minutes of charging provides 24 hours of cooking time. Fully charged, it lasts for more than 90 hours.
The WiFi Booster is the accessory that solves three things at once. Charging: the built-in battery can fully charge the thermometer up to 16 times without the Booster being connected to a wall socket. Stored in the Booster, the thermometer remains fully charged and ready to use for up to 9 months without you having to think about it. Range: the Booster connects to your WiFi network and forwards the thermometer’s data to MeatNet™ Cloud, giving you real-time monitoring in the Combustion app from anywhere in the world, regardless of your distance from the kitchen. It also extends Bluetooth range by a further 100 metres per unit in the network, making the system useful on large properties, in conservatories, on jetties and in commercial environments. The Booster is compatible with all Combustion accessories, including WiFi Display, sold separately, and relays signals across the MeatNet™ network between all connected devices.
The Booster measures 165.8 × 15.8 × 14.4 mm, charges via USB-C and reaches a full charge in 60 minutes. It is CE certified for the European market (CE-EMC, CE-RED, REACH, ROHS). The package contains a Combustion Predictive Thermometer Generation 2 and WiFi Booster. The Combustion app is free and available for iOS, Android, iPadOS and macOS, M1 or later. Combustion Inc. was founded by Chris Young, co-author of Modernist Cuisine and founder of ChefSteps and Joule. The Kitchen Lab is one of only a handful of Combustion Inc. retailers in Europe.
In short: the thermometer with eight sensors and a prediction engine, packaged with the Booster that keeps it charged for up to 9 months, connects it to WiFi and extends Bluetooth range. The complete system for anyone who wants to monitor cooking from anywhere in the world without keeping a display by the hob.
- 8 sensors: 4 TrueCore® (core), 3 TrueSurface™ (surface), 1 TrueAmbient™ (air)
- Physics-based Prediction Engine™ and SafeCook™ (USDA-FSIS/FDA)
- IP69K, ceramic-to-metal braze, vacuum-tight, maximum 482°C
- LTO battery: 90+ hours of cooking time, 5 minutes of charging = 24 hours of cooking time
- WiFi Booster can fully recharge the thermometer up to 16 times
- The thermometer remains fully charged and ready to use for up to 9 months in the Booster
- WiFi bridge to MeatNet™ Cloud for global real-time monitoring
- Extends Bluetooth range by 100 m
- Booster: USB-C, fully charged in 60 minutes, CE certified
