| 摘要 |
<p>Optical acoustical signalling apparatus, particularly for personal safety, characterized in that it comprises an optical acoustical signaller (2) and an operating and controlling unit (1), which comprises: - a supply source (12), - an inertial switch (25), - a first signal operating generator (22) for the acoustical transducer (18), connected to said inertial switch (25), - a second signal operating generator (20) for the optical transducer (7) having the set input connected to the output of the first generator (22). - a two-position and three-way commutator (8), which set the apparatus to operate as passage detector from a static condition to a dynamic condition and viceversa, in the first position of the commutator (8) the inertial switch (25) being set for starting, on its activation, the generator (22), and in the second position the inertial switch (25) being set for resetting the first generator (22), which was set on the supplying of the apparatus.</p> |
