Abstract: A device for measurement of temperature or other physical quantities in one or more test points where the transmission of signal and energy between a rotating mechanical element and a stationary part of a system is realized by contactless transmission, wherein a contactless signal transmission is based on a differential capacitive coupling, and a contactless energy transmission is based on an inductive coupling. Measurement of high operating temperatures on a rotating clutch component is obtained by using resistive sensors which have a small mass and volume requirement. Ultra low power consumption is achieved by using resistive temperature sensors, low power sensor signal modulator, signal transmission based on the differential capacitive coupling, and power supply that allows operation from low input voltages induced in the receiving coil for collecting the energy from the magnetic field.