3561
Sound System telephone interfaceTelephone intercom interface for connection of switchboards 35P4, 35P8, 35P4/EG, 35P8/EG for single-family Sound System or A.C. installations, allows each extension audio connection to the speech unit and controls the door lock release, the card can be used for module I/O 35PS, installation on DIN rail (60715 TH35), occupies 4 modules size 17.5 mm
3561Sound System telephone interface