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The BUS unit functions involve the installation of push button components in a KNX system:
Mounting BAU (Bus Access Unit): Place the BAU in the mounting box and secure it by fastening the screws of the claws with an appropriate screwdriver.
Attaching Frame: Put the frame on the BAU. Connecting Electronic Group: Position the electronic group onto the BAU after verifying the connector positions.
Adding Button: Attach the button to the electronic group.
Note: The BAU is a common component for different electronic groups (1, 2, 3 gang).