Use the latest SMD LEDs that with equal absorption ensure a higher luminous flux. With an aluminium profile with a standard section of 30x22 mm (H x D) 5 different models are developed.
First advantage: low power for high light yields, therefore excellent efficiency and energy savings.
Second advantage: thanks to the small size of the “heads” you can directly connect a ceiling lamp with another without need separate connectors; long “bright strips” are obtained, without need to individually power each ceiling lamp. 
Complete with power cord, connecting cable and clip for wall fixing.