| 摘要 |
1. Device for controlling and recording events within security installations, particularly alarm installations, comprising a first apparatus connected to a plurality of live circuits of the installation and consisting of a microprocessor (3) allowing the detection of changes in the state of said circuits and the transmission of a time recorded message concerning a change of state to a storage memory, and a second apparatus being provided to visually display the message stored in the memory of the first apparatus ; characterized in that the first apparatus is permanently placed in the surveillance security installation within an impregnable case, the microprocessor (3) of the first apparatus being permanently programmed during manufacture and any attempt to open the case leading automatically to the storage of corresponding information in the memory (4) ; and in that the second apparatus is portable and is separated from the first apparatus, means being provided for connecting the two apparatuses when is wished to display the message stored in the memory (4) of the first apparatus. |
