Abstract: Disclosed is a medical telemetry system for collecting vital data, specifically body temperature, the system consisting of a plurality of measuring sensors 10 and a collecting device 30. Each sensor 10 is placed at a predetermined location of the patient's body and automatically detects the vital data value to be measured. Upon a measurement termination signal, which is preferably acoustical, the sensor can be removed from the measuring location and stored away. For a defined period of time, e.g. two hours, the sensor 10 remains in an active state in which it transmits the detected measured value upon request. The measured value along with an ID code and status signals, which relating for instance to the battery voltage, can be interrogated and stored by means of a collecting device 30. Upon expiry of the defined period of time, the measured value is cleared, and the sensor 10 is automatically reset to an energy-saving rest condition.