Disclosed is a telemetry system (10) with a receiver unit (50) and a plurality of transmitters (20-40), each adapted for providing a wireless communicating with the receiver unit (50). The receiver unit (50) comprises a plurality of transmitter holding positions (52-56), such as insertion slots, for receiving one of the transmitters (20-40), and means for assigning one of the transmitter holding positions (52-56) to the transmitter (20-40) received in the assigned transmitter holding position (52-56).