Okay, so, some single houses have fusebox on the outside. For obvious reasons, these boxes are not allowed to be locked. But I don't want, some night, for some one to turn the electricity off, and then enter my home with night vision goggles and harm me.
So, here's an idea: Make an alarm system that makes big flashy light and big noise when someone opens it without entering a secret password on a keypad located on the latch to open the box.
If it is a true emergency, I will open it and shut down electricity--even at pain of hearing the alarm. The police and the firemen will understand.
If it is not an emergency, I will have time to enter the code, and open the box without setting off the alarm.
Lastly, if it is a thief, then he will set off the alarm, and alert me, neighbors, and the police that an intrusion has happened.
And the device should have a battery that charges from the fusebox. (and optionally from solar) so that if the theif ignores the warning and opens it to turn electricity off, the alarm will still function.
Searching for it on google reveals no prior art.
Such a simple idea, but very useful to people living in bad neighborhood and to suspicious people who don't live in bad neighborhood.
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