Carbon monoxide alarms, also called CO alarms,are a key safety device for your home.
During our recent carbon monoxide alarm tests,we found three off-brand alarms purchased from Amazonand eBay that did not respond properlyto dangerous levels of CO in the air.
We performed two tests, one at high CO concentrationsand one at low concentrations, to accountfor different scenarios that might arise in a home.
At the low concentration, an alarmshould go off between 40 minutes and two hours and 45 minutes.
Two of the alarms, the GoChange 882 LCD and the NetBoatWB_H3110061, failed to go off at all.
At the high level concentration, an alarmshould trigger between 4 and 15 minutes.
This GoChange alarm failed to go off.
The NetBoat did respond to the higher concentration,but it did too fast, sounding after only 30 seconds.
If an alarm goes off too quickly,that's considered a nuisance alarm,and it could lead the homeowner to either unplug or removethe batteries from the alarm.
And that could lead to a dangerous situation.
A third model, the FoHo YJ-806 failed both tests,going off too fast at both levels of CO exposure.
It's important to note that none of the failed alarmswere marked with a UL certification.
The UL certification shows that your alarm meets widelyaccepted safety standards.
If your alarm doesn't have that certification,we recommend that you replace it.
After being contacted by Consumer Reports,Amazon said the products were no longer available for sale.
They told us they also removed several similar alarms, nottested by CR, that, we pointed out,did not list the UL certification.
Amazon will work with consumers whomay have purchased these alarms under the terms of its returnpolicy.
EBay responded that based on our report,they had removed the specific carbon monoxide alarmlisting from the seller and requested the seller contactany buyers who may have purchased these alarms.
We are unaware of any injuries related to these products.
If you already own one of the FoHo, GoChange, or NetBoatcarbon monoxide alarms, we advise that you stop using themand purchase one of our recommended COalarms, such as the Top Rated First AlertCO615 a standalone alarm, or the First Alert OneLinkSCO501CN, an interconnected alarm thatsyncs with multiple alarms in your home.
For more information about carbon monoxide alarms,please visit consumerreports.