Before installing the monitor, you must provide a hole or recess in the wall with a diameter of 68 mm for a standard mounting box for a 65 * 45 mm outlet. This is necessary for switching wires and mounting the monitor.
The bracket is fixed in the socket by using the supplied screws and a cross-head screwdriver.
The monitor is mounted on the bracket from top to bottom.
Before installing the monitor with the SP-AU handset, it is necessary to fasten the bracket for the tube on the backside as shown in the diagram below: