Thermal Sensor Technical Specifications

CORE | Thermal Sensor Technical Specifications



This short note presents the base technology with the thermal sensor technical specifications and features that can be found at the bottom of CALERAresearch for Research applications and CALERA® Development kit for OEM integration.


About CORE features


CORE is the first non-invasive wearable that allows for continuous core body temperature measurements under real-life conditions with great accuracy

Core body temperature monitor

Accurate technology

Our patented novel sensor allows to accurately monitor core body temperature just through skin contact.

Artificial Intelligence Algorithm

CORE uses a machine learning based algorithm to calculate and analyze core body temperature in real-time.

Comfortable and lightweight

The device is easily mounted on a chest strap or attached with a medical grade patch. It is water-resistant and can be sanitized using alcohol.

Connect with your device(s)

CORE connects wirelessly with Garmin, iOS and Android smartwatches and smartphones.

Constant monitoring

Long battery life allows monitoring core body temperature for longer periods (over 6 days) without interruption.

BLE compatible

Multiple patches can be operated with the same smartphone. The BLE standard temperature profile allows to stream the data on any BLE compatible device.


More about CORE’s thermal sensor technical specifications


CORE: Rechargeable patch device for continuous monitoring of
Core Body Temperature

CORE outer casing: Made of durable skin-compatible polymer. Fully sealed with no moving parts

Compact Size: 50mm x 40mm x 8.5mm, Lightweight at only 12 grams

Power supply: Rechargeable lithium-polymer battery via magnetic USB cable

Battery life: Constant transmit time > 6 day, Standby mode > 5 weeks

Internal memory: Record up to 84 hours of high-resolution data

Data output streams: Core Body Temperature, skin temperature, data quality, battery level, heart rate (from 3rd party sensor, if available), time stamp; additional information can be exposed upon request (ie. accelerometer, firmware version)

Water rating: IPX7 (waterproof up to 5ft)

Sampling rate: 1 Hz

Communication protocol: Standard BLE Health Thermometer profile, Standard ANT+ profile

Skin temperature accuracy: ±0.1°C

Core Body Temperature accuracy measured at chest: ± 0.66°C (2σ); 0.26°C Mean Absolute Deviation

Calibration: Factory calibrated – no re-calibration necessary

Product features:
– Smartphone application (Android/iOS/WatchOS/Wear OS/Garmin)
– Live display of current core body and skin temperature (via app)

Connectivity: CORE accompanying Smart Phone Apps available iOS and Android Smartwatch Apps also available on Apple WatchOS, Garmin ConnectIQ with Android WearOS available soon. Also compatible with many existing third-party apps and devices.


Integrate CORE into your platform or application | There are several methods to access the data on CORE. For instance; local storage, cloud access, BLE & ANT connectivity and via our API. For more details and an overview of all methods click here.

The full data sheet summarizing the key features and technical specifications is available here.


Which thermal solution & technical specifications should you consider for your project?


CALERAresearch for your project

For your research project, we now offer the CALERA Research. This device gives you access to high-resolution data, on-device data storage, raw sensor data, and more features. For more information, click here and for the product description, click here.

CALERA® Development Kit for your OEM integration project

For your OEM Integration project, CALERA for OEM integration in MedTech and Wearable Technologies, is available. For more information, click here and for the product description, click here.

thermal sensor technical specifications
Chest-worn thermal sensing solution
thermal sensor technical specifications
Wrist-worn thermal sensing solution

Both solutions are suited for a broad range of applications: