The IS200TRTDH1C is a board component manufactured by General Electric for the Mark VI system
IS200TREGH1BDB GE MKVI, Trip Terminal Board, GAS
IS200TREGH1B GE MKVI, Trip Terminal Board, GAS
IS200TPROH1BBB GE MKVI,Protection Terminal Board
IS200TPROH1B GE MKVI,Protection Terminal Board
IS200TBTCH1CBB GE MKVI,THEROCOUPLE TERMINAL BOARD
IS200TBTCH1C GE MKVI,THEROCOUPLE TERMINAL BOARD
IS200STAIH2A GE MKVIe, Analog Terminal Board, Simplex