WEBVTT

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To change the batteries in your Smoke
and Carbon Monoxide Detector:

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first, remove the sensor off its bracket
by gently twisting counterclockwise.

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Be careful not to touch the
test button during this process.

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Open the back panel of the
device and remove the batteries.

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Place new batteries in the compartment.

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The sensor takes two CR-123A
lithium three-volt batteries,

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which can last up to two years based on usage.

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Replace the cover and twist the
device back into its bracket.