Abstract: The subject of the invention is a simple, reliable and inexpensive application-wise system for obtaining information on the status of apparatus connected to a “lighting power line.” Such a system of obtaining information is completely immune to disturbances since nothing additional is introduced into the grid. Information is detected in a substation or an electric lighting enclosure i.e. at the power supply source in standard classical measurement methods. The process for the sequential measurement of operational parameters of LED lighting and other apparatus connected to a power line comprising an electric lighting enclosure (1) in which all energy power lines (L1, L2, L3 . . .