On November 10, 2016 Kiddee issued a recall notice for NightHawk combination smoke-carbonmonoxide alarms. The alarm can fail to continue to chirp when it reaches its seven year end of life if the batteries are replaced, leading consumers to believe it is still working. This poses a risk to consumers being alerted to a fire or CO incident in their home.
It is recommended that the units be replaced. Kidde can be contated at 855.239.0490 for additional information.