Device automatically closes doors during fire

Tech

LifeDoor

Data pix.

LOS ANGELES -- A new, automatic fire safety device is designed to help protect families while they sleep.

LifeDoor works by automatically closing bedroom doors when triggered by the sound of a smoke alarm, which can slow the spread of flames and protect occupants from toxic smoke and other dangerous fumes.

FOX 5 Tech Expert Rich DeMuro learned more about how it works.

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