New Cosmos USA is recalling about 26,360 DeNova Detect brand combination natural gas and carbon monoxide alarms, model number DD622NCV. These alarms can enter a "sleep mode" after an initial alert, which may cause them to fail to detect and alert consumers to subsequent leaks of natural gas or carbon monoxide. While no injuries have been reported, the company is offering free replacements for all affected units. These alarms were sold at Lowe's stores and online at Amazon.com and other retailers between December 2023 and July 2024.
The alarms can fail to detect dangerous levels of natural gas or carbon monoxide if a previous alert lasted less than four minutes, which causes the device to enter an inactive sleep mode. This failure poses a serious risk of carbon monoxide poisoning or undetected natural gas buildup, which can lead to explosions or fire.
Consumers should immediately register online at www.denovadetect.com/safetynotice-dd622 to receive a prepaid shipping package and replacement alarm. Consumers should continue using the recalled alarms until they install the replacement alarms. Once they receive the replacement alarm, consumers should ship the recalled alarm back in the provided prepaid shipping package.
"DeNova Detect" and "Natural Gas + Carbon Monoxide" are printed on the front; model number is on the top side; serial number is on the right side.

Recalled Natural Gas + CO Alarm

Location of Model Number of Alarm

Location of Serial Number of Alarm
If you or a family member were harmed by this recalled product, you may have legal rights. Consider consulting a consumer protection attorney to understand your options for compensation.
This is general information, not legal advice. Go Backs is not a law firm and does not provide legal services.
AI-Enhanced Content: The summary, action steps, and risk assessment on this page were generated by AI from official government recall data to improve readability. This is not legal or medical advice. Always refer to the official agency sources below for authoritative information.
Sources: CPSC Notice ยท Raw API Response