… contacted via this board? (5)
![Ross](/clue/static/ross-mug.min.png)
I believe the answer is:
ouija
(Other definitions for ouija that I've seen before include "(Seance) lettered board" , "Kind of board used in seances" , "Type of board used in seances" , "This board is used in spiritualist proceedings" , "Something to raise spirits" .)