Kai Bettermann


Prof. Gert Trauernicht


Winter 20/21




Cali is a contactless clinical thermometer, which is characterized by its special operation and handling. With common contactless thermometers, the device lies in the hand like a weapon. Here, the measurement is taken by aiming at the forehead. It is completely different with Cali: Parents who suspect a fever in their children usually feel the temperature by holding the back or the palm of their hand against the child's forehead. Cali strives to achieve the same motion sequence. When using Cali, the aim is to give a feeling of well-being, which is especially important for children.

The use of Cali is very simple and intuitive. It is placed on three fingers (ring, middle and index finger) and held to the forehead when taking the temperature. The haptic switch-on button can be ideally operated with the thumb. The notched surface makes it easy to feel and easy to operate. The LED ring on the button indicates the status of the measurement. As soon as the LED ring is closed, Cali starts measuring.

The thermometer has a built-in battery and is charged via wireless charging. There is a charging station for charging the device, which can also be closed optimally with a magnetically attached lid. Cali is mainly for home use and ideal for non-contact temperature measurement, especially for children.

more Projects

  • LUNA

    Leo von Boetticher

  • Bifrost

    Igor Altenhof

  • Febris

    Jakob Höxtermann

  • Modulus

    Gürkan Orak