ELI5, How does a Scott air paks’ Pak-Alert work?

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I know it uses motion sensors but what tells it you’re moving?

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Anonymous 0 Comments

As you’re moving, the respirator backframe, which the firefighter wears as a backpack, is constantly shifting and moving against your back, as well as moving through space.

A gyroscope can pick up and measure this motion. If it stops measuring it, it enters a pre-alarm condition and then sounds an alarm.

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