RhB D 4223 (EW I steel), built 1980 by FFA, rebuilt 2010 to a heating car with pantograph which can be used on long trains to power half the train in winter in case the train only has a 300 V heating cable. When the 1000 V heating is used, the pantograph is not required, here it is only used as baggage car. Thusis, 2019-10-03.