Building automation system (1, 2) of a building comprising a plurality of electrical installation devices in the form of sensors (3, 4, 5, 6) and actuators (8, 9, 10, 11) embodied in the form of switching actuators, blind actuators and dimming actuators, characterized in that a) logical functions of the building automation system including the linkages of the sensors (3, 4, 5, 6) and actuators (8, 9, 10, 11) with/among one another are stored in data memories of the sensors/actuators, b) an automatic data protection is achieved by virtue of the logical functions including the linkages of the sensors (3, 4, 5, 6) and actuators (8, 9, 10, 11) with/among one another furthermore being stored on a backup-enabled home server with assigned data memory, said home server being equipped with a radio device, c) network coupling units with radio devices of the sensors (3, 4, 5, 6) and actuators (8, 9, 10, 11) provide the precondition for radio connections of the sensors/actuators among one another and the precondition for required network connections to the home server, d) at least one mobile terminal for the configuration, programming, parameterization and variation of the logical functions of the building automation system and for the operation of the sensors (3, 4, 5, 6)/actuators (8, 9, 10, 11) is provided, e) actuators (8, 9, 10, 11) and respectively assigned sensors (3, 4, 5, 6) respectively form a physical sensor/actuator structural unit, such that a desired influencing of the actuator by the assigned sensor is able to be performed also directly, and f) a plurality of sensors and/or actuators are combined to form a group and are remote-controlled jointly by virtue of the fact that upon actuation of a dimming actuator, a further linked dimming actuator is automatically likewise actuated in order to realize a desired light scene in this way. a) logical functions of the building automation system including the linkages of the sensors (3, 4, 5, 6) and actuators (8, 9, 10, 11) with/among one another are stored in data memories of the sensors/actuators, b) an automatic data protection is achieved by virtue of the logical functions including the linkages of the sensors (3, 4, 5, 6) and actuators (8, 9, 10, 11) with/among one another furthermore being stored on a backup-enabled home server with assigned data memory, said home server being equipped with a radio device, c) network coupling units with radio devices of the sensors (3, 4, 5, 6) and actuators (8, 9, 10, 11) provide the precondition for radio connections of the sensors/actuators among one another and the precondition for required network connections to the home server, d) at least one mobile terminal for the configuration, programming, parameterization and variation of the logical functions of the building automation system and for the operation of the sensors (3, 4, 5, 6)/actuators (8, 9, 10, 11) is provided, e) actuators (8, 9, 10, 11) and respectively assigned sensors (3, 4, 5, 6) respectively form a physical sensor/actuator structural unit, such that a desired influencing of the actuator by the assigned sensor is able to be performed also directly, and f) a plurality of sensors and/or actuators are combined to form a group and are remote-controlled jointly by virtue of the fact that upon actuation of a dimming actuator, a further linked dimming actuator is automatically likewise actuated in order to realize a desired light scene in this way.