A lighting apparatus is provided. A lighting means of the apparatus has one or more LEDs. A first device of the apparatus cooperates with a pulse width modulation device for optionally adjusting brightness of the LED. To simplify the maintenance of the lighting apparatus, a memory and a second device are provided. The memory stores information relating to the lighting means. The second device generates a signal, which encodes the information using the pulse width modulation device. As a result, the signal can be transmitted by the LEDs as a pulse width-modulated light signal.