Physical description
Destination indicator equipment that was fitted to a C class tram - dot matrix style, set to the word "CITADIS" with inbuilt control equipment and computer control plugs. Installed within a metal box, with detailed wiring, plastic components and electrical components. Has a loose wire with two pin plug in the bottom left hand corner of the unit.
Three labels on the rear control unit - no formal manufacturer name - perhaps DUHAMEL and other ID items.