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Do all smoke detectors have batteries?

April 26, 2017batteries Detectors smoke

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Do all smoke detectors have batteries?

1 Answer

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Most smoke detectors do, however some older models were wired directly into your homes hard wiring and did not have a battery backup. Newer homes (within the last 10 years) have hard, in-circuit wired smoke detectors with battery back-ups for power outages.