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They've become common in our houses and places of residence. The common everyday smoke alarm.
Hi I'm Captain Joe Bruni, have you ever wondered how a smoke alarm works. The smoke alarm basically
is simple in design. The circuit board, or the electronics are against the base plate
in the back of the system. Mounted to the circuit board is the horn that emits the audible
tone, when the smoke alarm is set off. The sensing chamber where smoke enters to be picked
up that there maybe a possible fire and the area that houses the battery. How they work
basically are two different types. Ionization, and photo electric. The ionization type uses
a small radioactive source that emits current between two contacts. When smoke particles
break that electrical current flow, it sets off the alarm. The photo electric, uses a
light beam source inside the sensing chamber. When smoke particles break the photo electric
light beam, it sets off the alarm. Smoke alarms are pretty basic and simple in design. They
are meant to alert occupants of any structure in the early beginning stages of a fire so
that they can evacuate and exit the structure safely long before smoke becomes a problem
for the occupants of the dwelling. The common basic smoke alarm. Simple in design and everyone
should have one in their place of residence. I'm Captain Joe Bruni, stay safe and we'll
see you next time.