| 摘要 |
<p>An assault alarm comprising an operating unit (9) which includes a switch-on unit (11) that can be activated manually by a switch-on button (10), and a switch-off unit (15) which can be activated, preferably manually, by a switch-off button (14), wherein the operating unit (9) is connected to an alarm emitter (7), wherein a timer (12) is adapted to delay the release of alarm (13) for a predetermined period of time after activating the switch-on unit (11), wherein the switch-off unit (14) functions to reset the operating unit, preferably directly, to a normal state in which the switch-on unit (11) is inactive, and wherein the alarm is used in conjunction with monitoring the entry of persons to premises through a door equipped with a lock, preferably a remote control lock. According to the invention, the alarm includes detecting devices (40', 5, 6, 25, 26, 27; 26, 27, 28, 29, 40; 26, 27, 40') which function to detect that the door is opened and therewith activate the switch-on unit. The detecting devices are intended to activate the switch-off unit (15) as a result of the switch-on unit having first been activated by the operator and the door then closed.</p> |
