Fastening unit for fastening of functional device on fastening surface, particularly for fastening smoke detector on ceiling, comprises retaining unit, which has magnet assigned to mounting surface, by which magnetic field is built

摘要

The fastening unit (1) comprises a retaining unit (4), which has a magnet (13) spatially assigned to the mounting surface (5), by which a magnetic field (14) is built between the magnet and a counter body (6) assigned to the mounting surface while connecting the mounting surface on a fastening surface (3), such that a functional device (2) is arranged on the fastening surface by a retention force caused by the magnetic field.