The System Sensor i4 Series COSMO-2W and COSMO-4 combination smoke/CO alarms can fail to detect carbon monoxide in the home. This poses a risk of carbon monoxide poisoning.
Consumers should immediately contact System Sensor to obtain a free replacement combination CO/smoke detector. Consumers should keep using the recalled detectors until replacement detectors are installed.
Consumers should contact ADT immediately for a free inspection of the recalled detectors and, if necessary, a free repair. Consumers should not attempt to disable the recalled detectors. ADT has contacted all customers.