Interface device in control cabinet design with RS232 and bus interface for connecting audio-visual control devices, conversion of ASCII plain text commands into bus telegrams, extensive and open protocol, detailed manual Building Management Interface, device mains voltage 230 V AC, 50/60 Hz, mounting on 35 mm top hat rail in accordance with EN 50022, dimensions 4 HP each 17.5 mm, material flame-retardant polycarbonate, halogen-free, light gray, bus and power cable can be screwed to the device inputs.