The BLU-CIF2 Interface Board provides a simple wiring interface for the BLU-CC, BLU-CP, BLU-CS, BLU-IR and BLU-SV (8) modules to the BSS London Series of Digital Signal Processors for LDS chapel installations. It provides LED status indicators, the appropriate connections for each of the controls, and relays for tiggering the turn on of external equipment and switching of speaker level signals for audio in overflow areas. The BLU-CIF2 is used for dual chapel or Heritage 09T configurations.