Millions of smoke alarms recalled

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WASHINGTON — Kidde NightHawk is recalling 3.6 million combination smoke and carbon monoxide alarms because of a possible alarm failure.

According to the Consumer Product Safety Commission, the alarm can fail to chirp once it reaches the end of its life if the batteries are replaced.

This could lead to thinking the alarm is still working when it’s not.

The recall involves the Kidde NightHawk combination smoke/carbon monoxide alarms with the model number KN-COSM-IB and a manufacture date between June 1, 2004 and Dec. 31, 2010.

The model number and manufacture date can be found on the back of the alarm.