Yet another part shown in FIG. 2 is an adaptation module 206 for adjusting the operation of the controller 201 in accordance with received indication messages. The controller 201 and the adaptation module 206 may be implemented as various combinations of hardware and software; as an example, they may both be essentially programmable software processes stored in a program memory of one or more processors. Further considerations about suitable physical implementations of blocks of the kind shown in FIG. 2 can be found in e.g. the patent publication EP2919562 mentioned above in the description of prior art.

The luminaire may further comprise a number of additional components not depicted in the schematic illustration of FIG. 2, e.g. a housing etc. Certain components, like for example those illustrated as blocks 201, 205, and 206, and possibly even 202 and 204, may constitute a combined entity that is commonly referred to as a control device 210, which the luminaire manufacturer installs as a single unit into the luminaire. The control device 210 may be, for example, a driver device for operating one or more light emitting diodes or an electronic ballast for operating a fluorescent lamp. Alternatively the control device 210 may be a device that has a small number of power converters 202 and their respective light sources 203 under its control, so that the user could even find it difficult to perceive some visible part of the system as a discrete luminaire.