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Best Fire Alarm Services in California -

2 Answers

Press and hold the test button on the smoke detector. 

It can take a few seconds to begin, but a loud, ear-piercing siren should emanate from the smoke detector while the button is pressed. 

If the sound is weak or nonexistent, replace your batteries.
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Carefully hold two to three lit matches together and then blow out the flame. Hold the matches so that the smoke drift up towards the smoke alarm. If the detector is working , the alarm will go off. 
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