The present invention relates to a sensor unit (1) having a measured signal receiver (4), which registers a measured signal (9), an A/D converter (5) for digitizing the measured signal (9), a transceiver device (6) for wireless data communication to an environmental device (2), and a processor (7). The processor (7) is a control processor for activating the measured signal receiver, the A/D converter, and the transceiver device. The digitized measured signal (9) is transmitted directly via the transceiver device (6) to the environmental device (2), without the complex and performance-intensive and therefore costly analysis occurring in the sensor unit (1).