(CNN) -- Kidde is recalling hundreds of thousands of smoke detectors because they don't actually alert customers to fires.
Affected models are Tru-Sense smoke alarms and combination smoke and carbon monoxide alarms.
They were sold at retailers like Wal-Mart, Home Depot and Amazon between may of 2019 and last September.
No incidents have been reported yet, but people with these alarms should contact the company for a replacement that works.
Kidde toll-free at 844-796-9972 or www.kidde.com and click on “Support” and then “Product Alerts” for more information.
The company promises to send replacements within three days of receiving claims.