| 摘要 |
The device comprises a grid 1 with a large number of holes 2, 3. At least one hole 2 has electrical contacts 8 sensitive to the insertion of the appropriate key 4 and located on an electrical circuit 12 which terminates at opening/closing or blocking/unblocking control means 15 associated, for example, with a lock 16. The other holes 3 of the grid 1 comprise means 9, 10, 19 sensitive to the insertion of any object 5 and located on electrical circuits terminating at an alarm 6. The chances of being able to open or unblock the lock 16 accidentally and quickly thus become very slight. This safety device can be used on doors, windows, French windows, shutters, cases, furniture, vehicles, etc. <IMAGE>
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