A Lighting system comprising: - an electronic converter (10; 10') comprising a positive and a negative power supply terminal for providing a regulated voltage ( V out) or a regulated current ( i out); - a lighting module (20'; 20") comprising: a) a first positive terminal (200a; 200c) and a first negative terminal (200b; 200d) for receiving said regulated voltage ( V out) or said regulated current ( i out), b) at least one light source configured to be powered by means of said regulated voltage ( V out) or said regulated current ( i out) received via said first positive terminal (200a; 200c) and said first negative terminal (200b; 200d) of said lighting module (20'; 20"), c) a second positive terminal (200e; 200f) for receiving an auxiliary voltage ( V aux), and d) a processing circuit configured to be powered by means of said auxiliary voltage ( V aux); characterized in that said system comprises: - a device external with respect to said electronic converter (10; 10') and said lighting module (20'; 20"), wherein said device comprises: a) a first positive terminal (400a; 400c) and a first negative terminal (400b; 400d) for receiving said regulated voltage ( V out) or said regulated current ( i out), b) a second positive terminal (400c; 400a) connected to said first positive terminal (400a; 400c) of said device, and a second negative terminal (400d; 400b) connected to said first negative terminal (400b; 400d) of said device, c) a third positive terminal, and d) a voltage regulator configured to divert energy from said first positive terminal (400a; 400c) and said first negative terminal (400b; 400d) of said device and generate said auxiliary voltage ( V aux) at said third positive terminal. - an electronic converter (10; 10') comprising a positive and a negative power supply terminal for providing a regulated voltage ( V out) or a regulated current ( i out); - a lighting module (20'; 20") comprising: a) a first positive terminal (200a; 200c) and a first negative terminal (200b; 200d) for receiving said regulated voltage ( V out) or said regulated current ( i out), b) at least one light source configured to be powered by means of said regulated voltage ( V out) or said regulated current ( i out) received via said first positive terminal (200a; 200c) and said first negative terminal (200b; 200d) of said lighting module (20'; 20"), c) a second positive terminal (200e; 200f) for receiving an auxiliary voltage ( V aux), and d) a processing circuit configured to be powered by means of said auxiliary voltage ( V aux); characterized in that said system comprises: a) a first positive terminal (200a; 200c) and a first negative terminal (200b; 200d) for receiving said regulated voltage ( V out) or said regulated current ( i out), b) at least one light source configured to be powered by means of said regulated voltage ( V out) or said regulated current ( i out) received via said first positive terminal (200a; 200c) and said first negative terminal (200b; 200d) of said lighting module (20'; 20"), c) a second positive terminal (200e; 200f) for receiving an auxiliary voltage ( V aux), and d) a processing circuit configured to be powered by means of said auxiliary voltage ( V aux); characterized in that said system comprises: - a device external with respect to said electronic converter (10; 10') and said lighting module (20'; 20"), wherein said device comprises: a) a first positive terminal (400a; 400c) and a first negative terminal (400b; 400d) for receiving said regulated voltage ( V out) or said regulated current ( i out), b) a second positive terminal (400c; 400a) connected to said first positive terminal (400a; 400c) of said device, and a second negative terminal (400d; 400b) connected to said first negative terminal (400b; 400d) of said device, c) a third positive terminal, and d) a voltage regulator configured to divert energy from said first positive terminal (400a; 400c) and said first negative terminal (400b; 400d) of said device and generate said auxiliary voltage ( V aux) at said third positive terminal. a) a first positive terminal (400a; 400c) and a first negative terminal (400b; 400d) for receiving said regulated voltage ( V out) or said regulated current ( i out), b) a second positive terminal (400c; 400a) connected to said first positive terminal (400a; 400c) of said device, and a second negative terminal (400d; 400b) connected to said first negative terminal (400b; 400d) of said device, c) a third positive terminal, and d) a voltage regulator configured to divert energy from said first positive terminal (400a; 400c) and said first negative terminal (400b; 400d) of said device and generate said auxiliary voltage ( V aux) at said third positive terminal.