Interface module designed for installation in control cabinets, with RS232 and bus interface for connecting audio-visual control devices; conversion of ASCII plain text commands into bus messages; extensive, open protocol; comprehensive Building Management Interface Manual; module mains voltage 230V AC, 50/60Hz; mounted on 35mm top-hat rail to EN 50022; size of 4 HP at 17.5mm each; made of flame-retardant, halogen-free polycarbonate, light grey; bus and mains cable can be screw-connected to module inputs