The present invention relates to a connector for wireless transmission of data and/or power between separate devices comprising such a connector of a system, in particular of a patient monitoring system, said separate devices comprising such a connector. The connector comprises a data transmission unit (271) arranged for transmitting data to and/or receiving data from another device of the system having a counterpart connector, a magnetic coupling unit (272) for transmitting power to and/or receiving power from another device of the system having a counterpart connector by use of inductive coupling, a detection unit (273) for detecting the strength of magnetic coupling between the magnetic coupling unit and a magnetic coupling unit of a counterpart connector, and a control unit (274) for switching the data transmission unit into a low-power mode and/or for enabling the magnetic coupling unit, if the detected magnetic coupling is above a first threshold and/or its increase is above a second threshold, and for switching the data transmission unit into a high-power mode and/or for disabling the magnetic coupling unit, if the detected magnetic coupling is below a third threshold and/or its decrease is above a fourth threshold.
