Device for transmitting an electrical signal parametrage of a steering member of a lighting module LED, power system, a set of lighting and method of transmission associated

The device (20B) for transmitting an electrical signal (S1) of setting to a steering member (18B) of a light source module (10B), light emitting diode (14) comprises transmission means (25B) of parameter signal (S1), while the control member (18B) comprises means (24B) for changing the polarity of the lighting module. The transmission device is intended to be connected to a wired electrical connection (21 B) between the control member (18B) and the light module and includes first means (26B, 30B) for detecting a signal ( S2) for controlling the passage of the light module in opposite polarity. The transmission means (25B) is adapted for transmitting the parameter signal (S1) to the control element, upon detection of the control signal in reverse polarity (S2).