On March 21, 2018, Kidde launched a safety recall of approximately 452,000 smoke alarms in the United States and about 40,000 sold in Canada. There is a possibility a yellow cap that covers one of the alarm’s smoke sensors was left on during assembly, possibly limiting the alarm’s ability to detect smoke. Please check the model of each alarm in your home.
The U.S. Consumer Product Safety Commission offers more information about the recall, including details that can help you determine if you have a recalled alarm,
Remember, be sure to test your smoke alarms monthly and change the batteries every time you change you clocks for daylight savings.