Truma Combi 4/E and 6/E power supply PCB. This is the mains 230V power input circuit board, used on both 4/E and 6/E heater.
This board is for heaters produced between June 2007 and June 2018.
Part Number 34020-63800
Genuine Truma Part
(For heaters produced from 06/2018-05/2020 you need part number 34020-00546)

If in any doubt please ask!!!