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B., INSTALLATION USING SCREWS (RECOMMENDED)
Mount the cover in a manner appropriate for the material of the wall in
question (using screws and dowels). Afterwards, place the door phone into
the holder. First, push the back rim of the top inwards and upwards until it
will not go any further, then press in the bottom as well. Finally, fix it in place
using the anti-theft screw.
● Place it in a location where it is not exposed to direct sunlight or rain.
If necessary, use a custom cover.
● Moisture must not be able to enter between the holder and the wall.
Seal and insulate it as needed.