Each lavatory has (on demand):one or two fluorescent tubes supplied with 115 VAC,a set of lights installed in the mirror, supplied with 28 VDC,kick strip light (LED Technology), supplied with 28 VDC.There is a lavatory sign (LED Technology) located in the cabin to show the location of the lavatories, and if the lavatories are occupied.Optionally, the luminance on the LOS housing is automatically dimmable by the means of an internal light sensor between maximum and minimum level in approximately1 sec to adapt the sign luminance to the ambient brightness.