ADT CO Detectors – Life Indicator Failure (2011)
Check Your Product
According to the U.S. Consumer Product Safety Commission (CPSC)
Product
CO 1224T Carbon Monoxide (CO) detectors
Brand
Sensor System, of St. Charles, Ill.
Lot Codes / Batch Numbers
Not specified in CPSC notice. Check official source for details.
Product Images
Source: U.S. Consumer Product Safety Commission
Sensor System, of St. Charles, Ill. is recalling CO 1224T Carbon Monoxide (CO) detectors. The hazard is: When the CO detectors reach the end of their useful life, they should send a signal to make a sound . Based on CPSC recall notice.
Summary derived from CPSC notice
The following details were not provided by CPSC: UPC codes.
Reason for Recall
As stated by CPSC
This recall involves hard-wired carbon monoxide detectors with model CO 1224T installed by ADT. The model number is behind the front cover.
Reported concern (CPSC)
When the CO detectors reach the end of their useful life, they should send a signal to make a sound in the home alarm panel alerting consumers it is time to replace them and a signal to ADT's alarm monitoring center. Some of the detectors were not wired properly to the ADT alarm system, resulting in the sound not going off in the home alarm panel and no signal to the ADT alarm monitoring center at the end of its useful life. Not replacing a CO detector at the end its useful life poses a CO poisoning hazard to consumers.
Recommended Action
Per CPSC guidance
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.
Verify this information on the official source
For complete details and official instructions, check the U.S. Consumer Product Safety Commission (CPSC) directly.
View official CPSC recall noticePage updated: Jan 6, 2026