These are the Kaiser Halox 1282-74 with a diameter of 180mm. In the hallway, we have slightly fewer but 250mm with correspondingly larger (and stronger) LED spots. In the bathroom in the photo, there are a total of 10 spots, 2 of which are just not visible. The walls were not built up high because that is the shower/WC partition. This allows the water vapor to escape better from the shower corner and the corner does not remain constantly damp.
*Edit: The spots are divided into 4 circuits, which corresponds to our idea of room usage and is only partially transferable to all.