Reconfigurable overhead unit, system and method

The present invention pertains an overhead unit () for presenting information, gathering information, transferring information, lighting and/or alarm signals in an individualized manner in a carriage or fuselage, comprising a function module (), a fixation module () for removably attaching the overhead unit to a rail, two receival modules () for receiving signals, two transmission modules () for sending messages and a processing module () for processing messages, whereby the receival modules and the transmission modules are operationally connected to the processing module, wherein the fixation module comprises a mechanical fixation system () configured to interlock with a fixation system of the rail, wherein the overhead unit comprises a proximal longitudinal end () and a distal longitudinal end (), wherein the receival modules comprise a proximal receival module located at the proximal end of the overhead unit and a distal receival module located at the distal end of the overhead unit, whereby the receival modules each comprise a sensor, wherein the transmission modules comprise a proximal transmission module located at the proximal end of the overhead unit and a distal transmission module located at the distal end of the overhead unit, whereby the transmission modules each comprise a transmission source, wherein the processing module of the overhead unit is configured to receive signals via the receival modules from a neighbouring overhead unit or from a neighbouring control unit, and/or wherein the processing module of the overhead unit is configured to cause the transmission modules to send out signals to a neighbouring overhead unit and/or the control unit.