Why is the smoke detector an important invention?

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One of the most important invention of our modern times is the smoke detector. It is able to sense when a fire occurs, because of higher levels of smoke in the home.

When this happens, it sounds an alaram that is designed to wake up that building's occupants.

George Andres Darby invented the first true smoke detector in the early 20th centuary. It did not depend just on temperature, but also included some of the particulate from smoke into the sensor design for an alarm to sound.

This useful device has saved many lives, and is found in virtually every modern building around the world today.

In fact NASA too developed a type of smoke detector for Skylab project.