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Minimum Purchase:
1 unit
Maximum Purchase:
99 units

Please place your order below for direct credit card payment. If you want to place a high volume order, or have an urgent request for testing the device, schedule a call with us.

greenTEG’s CORE device is the only wearable non-invasive, continuous, and accurate core body temperature monitoring solution. The solution consists of a wireless device which can be used as a patch or mounted via a belt. An Android/iOS application for real-time visualization of core body temperature is provided  as well. Multiple patches can be operated with the same smartphone.
Furthermore, Bluetooth Low Energy (BLE) standard temperature profile can be used to stream the data on any BLE compatible device, e.g. a smartwatch.
This sensor keeps accuracy also under non-perfect conditions as changing environmental temperature and convection (indoor and outdoor use) as well as during light physical activity. With its medical grade tape, the CORE is skin-friendly. For disinfection, the patch can be immersed in an alcohol bath.
This patch is not medCE or FDA certified and must not be used for medical nor diagnostic purposes.


  • Compact sensor solution (50 mm x 40 mm x 8.35 mm)
  • High body/skin temperature accuracy: ±0.05°C (typical) or ±0.13°C (max) from 20°C to 42°C
  • High core body temperature accuracy: ±0.21 °C
  • Non-invasive (used on the chest)
  • Enabling continuous monitoring
  • Fully compensation of thermal influences from the environment

In addition

  • Biocompatible patches
  • Water-resistant (IP67)
  • Disinfectable with alcohol
  • Battery life: constant transmit time >6 day
  • Bluetooth BLE & ANT+ Connectivity
  • APP support: iOS, Android, WatchOS, Wear OS and Garmin.


  • Worker safety
  • Body temperature monitoring in high demanding work environments (healthcare, mining, offshore, etc)
  • Elevated body temperature (EBT) monitoring
  • Circadian cycle monitoring
  • Training support for advanced and professional athletes
  • Early identification of thermoregulatory diseases
  • General body temperature monitoring


CORE has a warranty of one year under Swiss law.
Article number:
CORE includes:
1 CORE® Body Temp Patch, 8 medical grade double-sided adhesive tapes, 1 Android/iOS App for data downloading, 1 USB charging cable.
The patch consists of a reusable sensor CORE and a disposable double-sided adhesive. The adhesive is double-sided and medical grade.
Dimensions (diameter x thickness x hight) [mm]:
50 mm * 40 mm * 8.35 mm
Mass including battery [g]:
Power supply:
Rechargeable lithium-polymer battery (via USB)
Battery life (Standby) [days]:
Constant transmit time >6 (60)
Data storage capacity [hours]:
Data output streams:
Body temperature and skin temperature; up on request device orientation (X Y Z acceleration)
Sampling rate [Hz] 1:
Skin temperature accuracy [°C]:
±0.05°C (typical) or ±0.13°C (max) from 20°C to 42°C
Body temperature accuracy on chest compared to electronic ingestible pills [°C]:
± 0.28 (1σ) ;± 0.21 (MAD) (chest)
Factory calibration
Charging time:
~ 2 hours (full battery)
IP rating:
IP 67
Product features:
- Smartphone application (Android/iOS/WatchOS/Wear OS/Garmin) - Live display of current skin and body temperature (via app) - Standard BLE temperature profile for any devices