Americans are being urged to check their smoke alarms after safety officials warned that devices sold through Amazon and eBay could fail to sound during a fire. Two warnings issued by the Consumer Product Safety Commission (CPSC) on October 29 cover combination smoke and carbon monoxide alarms sold under five brand names. The agency cited nine reports of failures to alert users to smoke or fire.
One warning covers approximately 51,825 alarms, model JZA-540COM, sold under the JuzhiAnn, Yfwsrecinoe and JAEHSKA brands. The white plastic devices have digital displays and were sold individually and in multipacks on eBay and Amazon from November 2023 until October 2026, priced between $11 and $107. The CPSC is aware of seven reports of these alarms failing to alert users to smoke or fire.
The second warning concerns GuardianSense and KLTseanife combination alarms, model YHW-542COM-R. These also have white plastic housings and digital displays, with the model number and manufacturer identified on the back. They were sold individually and in multipacks on eBay and Amazon from September 2025 until June 2026 for between $18 and $168.
Two failures to alert were reported. The notice does not specify how many units were sold. The CPSC says: “Do not sell or give away these hazardous detectors.” Owners should stop using the affected products, dispose of them and install working smoke alarms and carbon monoxide detectors.
Consumers should compare both the brand and model number with the warnings. Although these are combination devices, the failures described concern their response to smoke and fire. The warnings do not establish a separate failure of their carbon monoxide detection functions.
The CPSC said the businesses involved had been unresponsive to its recall requests. For the JZA-540COM alarms, it identified retailer Shenzhen Laijinhe Trading Co., Ltd., doing business as Yfwsrecinoe US. For the GuardianSense and KLTseanife products, it named manufacturer ShenZhen YuFangWeiShi Technology Co LTD. and seller Shenzhen Lixiang Xiancai Co., Ltd.
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