| 摘要 |
An upgraded anti break-in system, particularly for applications inside environments, on vehicles or the like, comprises first sensor means, always active, with low energy consumption, and suitable for detecting any break-in into an area to be monitored, second sensor means normally deactivated and suitable for checking the break-in detected by the first sensor means into the area to be monitored, and a processing unit associated with the first sensor means and with the second sensor means and provided with activation means for activating the second sensor means in case of the detection of a break-in by the first sensor means. The second sensor means comprise an emission and receiver device for a detection signal at a delimited and predefined volume inside the area to be monitored.
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