What does it mean when your smoke detector keeps beeping?


Quick Answer

Reasons why a smoke detector may beep intermittently include dust-covered sensors, indoor temperature fluctuations or as an indication that the batteries or device must be replaced. Smoke detectors are essential for fire safety and devices that continue to beep should always be addressed.

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Full Answer

Smoke detectors are devices designed to detect the presence of smoke and provide early warning in the event of a fire. Most modern smoke detectors rely on either optical detection or a physical process known as ionization to detect smoke. Most smoke detectors utilize 9-volt alkaline batteries and are designed to beep in order to signal a low-battery condition.

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