CURRENT SUPERVISORY DEVICE WITH RELIABLE EVENT REPORTING

The present invention relates to a current supervisory device (1) comprising :- current sensing means (3) for sensing a current,- a circuit (5) arranged to convert a signal (4) received from the current sensing means into a signal (6) indicative of the sensed current,- a processing circuit (9) arranged to receive the signal (6) indicative of the sensed current, to detect an event based on the received signal (6), said detecting yielding an outcome corresponding to one of at least two different states, and to generate an event signal in accordance with the outcome, said processing circuit comprising modulation means for performing modulation based on the event signal,- an output terminal (10) arranged to output a reporting signal (12) received from said processing circuit, whereby at least one of at least two different states gives rise to said reporting signal being a modulated signal.