c-med° alpha

Integrate quality rated vital signs streamed from one single in-ear device.

  • Quality rated vital signs
  • Continuous data stream
  • Ease of integration
  • Update possibility
  • Small & lightweight
  • CE class IIa

Vital signs

The c-med° alpha is a class IIa medical measuring device that generates continuous data streams of three important vital signs:

  • Core Body Temperature
  • Heart Rate
  • Blood Oxygen Saturation (SpO2)

Learn more about the vitals signs

Two-in-one device

The c-med° alpha is a wearable sensor fusion of two frequently used medical measuring devices: Thermometer + Pulse oximeter.

Data you can trust

Quality rated

Focusing on the generation of reliable data streams, unique algorithms detect and flag invalid sequences in vital signs data. Thus you can see at any time whether a measurement is to be trusted or not. Heart rate and SpO2 are accompanied by their own quality ratings, the Quality and Perfusion, turning mobile vital signs into data for decision making.

Raw data is acquired in the outer ear canal and is then processed on the device itself. The calculated vital signs data is transmitted via Bluetooth 5.0.

Keeping health in view

With the c-med° alpha, the measured vital parameters can be monitored continuously and non-invasively in the external auditory canal at any time – whether in a healthy state or when ill**. In this way, one’s own state of health or that of another person can be better classified and evaluated.


The c-med° alpha is intended to be used with the c-med° App. A connection via other applications or systems is only intended if the respective second system adheres to the cosinuss° API specifications. For more information or if you want to integrate the c-med° alpha in your own system, contact us.

Integration with other IT ecosystems

Regardless of time and place – the captured vital signs can be seamlessly integrated into any IT ecosystem, enabling real-time data access, processing and action.

The Bluetooth standard services provide easy and secure integration of the data stream including the three calculated vital signs and the required device information. Thus, the c-med° alpha offers wireless data transmission of vital signs according to medical standards. An additional customized Bluetooth service enables advanced features such as high-resolution data streaming and individual device configuration during operation.

App Download

Technical details

Selected references with cosinuss° In-ear sensors

Telecovid – Remote Patient Monitoring for COVID-19 | University Hospital in Munich / 2020 – 2021

Related research articles:

DiAssCo – Full recovery from intensive station to home – COVID-19 | University Hospital LMU in Munich / 2021

Epitect | Nursing support for people with epilepsy through innovative ear sensor technology (EPItect) | University Hospital for Epileptology Bonn, Fraunhofer Institute for Software and Systems Engineering ISST, Clinic for Neuropediatrics at Kiel University, North German Epilepsy Center in Schwentinental-Raisdorf, cosinuss° GmbH, München / 03/16 – 02/19

Gait Classification | C. P. Burgos et al., “In-Ear Accelerometer-Based Sensor for Gait Classification,” in IEEE Sensors Journal, vol. 20, no. 21, pp. 12895-12902, 1 Nov.1, 2020.

Telemedicine with objective data – RPM | University Hospital in Denmark / 2021

360° data integration – EMERGENCY CARE | University in Sweden / 2021

Customer support

Learn, share and build. cosinuss° offers technical documentation and in-person support for a successful integration and user training.

More In-Ear Sensors


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The °One is a powerful fitness tracker. Used by competitive athletes in a wide range of disciplines.


The °Two is a multi-parameter sensor in the ear. Often used in scientific and medical studies.


The °Temp is a reliable temperature tracker in the ear. Often used in scientific studies.


Are you a healthcare provider looking for real-time monitoring solutions? Are you a research institution conducting monitoring studies? Or are you a digital health company developing mobile applications for medical technologies?

** Based on the measurement of vital signs, monitoring of various physical reactions is enabled and simplified: hypothermia, hyperthermia (fever), changes in the circulatory system, tachycardia and bradycardia. Contraindications: Any form of disease of the ear, in case of carbon monoxide poisoning.