alot and i mean alot of americium and iron and metal for the sound too just to help out
Selenium
It used to be Selenium, but modern photocells use silicon (Si).
fire alarms blink to alert you that they are on and working. -SmartyPants11
Fire-Lite Alarms was created in 1952.
Firestore.com and firstalertstore.com are both place where you can purchase fire alarms in bulk online. You can also purchase 3 packs of fire alarms from you local Home Depot.
Most public areas and buildings have them installed as a legal requirement. Some houses and residential buildings also have fire alarms but mostly smoke alarms. (Two different things).
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Fire alarms chirp intermittently to indicate a low battery or a malfunction in the system.
Some fire stations offer smoke alarms at little or no cost. Fire stations always have smoke alarms available, to make sure that there community is kept safe.
The fear of fire alarms is known as "pyrophobia." This specific phobia can manifest as an intense anxiety or irrational fear of fire-related situations, including the sound of fire alarms. Individuals with pyrophobia may avoid places or situations where they anticipate encountering fire alarms, leading to significant distress in their daily lives.
fire pole used for false alarms
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