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Question:

Fire alarms is beeping what to do?

My firer alarm was goin off for hour this morning a pressed the test button and it stopped its started again and press button again but ain't worked this time anyone no what to do as goin be hard to sleep listening to it beep ever min thanks z

Answer:

No more than a few centimetres.
The problem with your understanding is that you apparently do not understand the difference between the real world and movies. Real laser security systems DO create impenetrable walls.

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