The invention relates to a service device having a system of a gasper module and a lighting module for a passenger service unit of an aircraft, comprising: a lighting source in a housing of the lighting module for providing light and a gasper orifice in a housing of the gasper module for supply of gasper air, wherein the lighting module and the gasper module are assembled in a housing assembly of the service device, wherein the housing assembly is adapted to hold the lighting module and the gasper module essentially around an axis (Z) of the housing assembly. According to the invention the lighting module and the gasper module are separated from each other by a housing assembly bearing part, and a force transmission is applicable to the lighting module and the gasper module for independent movement of at least one of the lighting module and the gasper module relative to the bearing part, and wherein the gasper module housing and the lighting module housing are separately form fitted to the bearing part by a positive locking.