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Amazon Customers Warned of Defective Smoke, Carbon Monoxide Detectors

Testing found that devices failed to set off alarms

spinner image Testing smoke detector alarm battery
Alex Hinds / Alamy Stock Photo

Amazon shoppers who purchased several models of carbon monoxide (CO) and smoke detectors should stop using them because they may fail to detect smoke and/or the deadly gas, the Consumer Product Safety Commission (CPSC) warns.

Sensitivity tests performed by CPSC on PETRICOR, VARWANEO and WJZTEK detectors found that they failed to issue an alert when exposed to a predetermined concentration of smoke. Meanwhile, tests performed on OKEAH devices found that they didn’t issue an alert when exposed to a concentration of carbon monoxide at 400 parts per million and a predetermined concentration of smoke. Both failed tests are a violation of voluntary safety standards.

“If a combination smoke and CO detector that does not alert to the presence of an elevated level of carbon monoxide or smoke is installed in a home, and carbon monoxide or smoke enters the home, the consumer will not be warned of these harmful conditions, making injury or death very likely,” the CPSC said in a statement.

The faulty models cited, with their Amazon Standard Identification Number (ASIN), are:

spinner image samples of the recalled smoke and combination carbon monoxide detectors
Courtesy United States Consumer Product Safety Commission

PETRICOR, VARWANEO, and WJZTEK:

  • Model: MQ-808 with ASIN: B09DPPFJZJ
  • Model ACJ-512COM with ASIN B0928QZ21C
  • Model No. KT-X3 with ASIN B07QVC2722 and B07M8LR9M7

OKEAH:

  • Model YJ-901 with ASIN: B097B63W44

The PETRICOR, VARWANEO and WJZTEK detectors were sold for between $15 and $53. They are made of white plastic, with approximate dimensions of 4 x 1.5 x 4 inches. The PETRICOR and VARWANEO models feature a digital display. The PETRICOR and WJZTEK models feature a label on the back that lists the model number.

The OKEAH detectors were sold for between $25 and $75, are made of white plastic and measure about 4 x 1.5 x 4 inches, featuring a digital display.

All the products are advertised to detect dangerous levels of carbon monoxide and smoke by flashing a red LED light and emitting loud alarm patterns.

Anyone who purchased one of the CO detectors is advised to immediately stop using it, throw it out and install a new working device.

Amazon has stopped selling the affected products, is informing customers of CPSC’s warning and is providing them with refunds, a spokesperson told AARP.

In March, the CPSC warned consumers about a different CO detector sold on Amazon, citing that it failed to set off an alert in the presence of the gas. 

“This is the sort of situation, involving foreign sellers who have not responded to requests for a recall, that has led CPSC to look to companies like Amazon to take responsibility for these types of products,” the agency told AARP. “In fact, CPSC is involved in litigation against Amazon regarding just such a circumstance.” 

Carbon monoxide, fire safety

CO is a deadly, odorless, colorless gas. It is found in fumes produced by vehicles, stoves, lanterns, grills, fireplaces, gas ranges and furnaces. When it builds up indoors, it can poison people and animals who breathe it, according to the Centers for Disease Control and Prevention (CDC).

The most common symptoms of CO poisoning are headache, dizziness, weakness, upset stomach, vomiting, chest pain and confusion. When a lot of CO is breathed in, it can cause individuals to pass out or die. Those who are sleeping or impaired by alcohol or drugs can die from CO poisoning before they notice symptoms.

Smoke detectors should be tested at least once a month to ensure that they are functioning properly. Additionally, it is recommended that you replace the batteries in your smoke detectors every six months and replace the detectors themselves every 10 years, according to the National Fire Protection Agency (NFPA)

Older adults, infants and people with chronic heart disease, anemia or breathing problems are more likely to get sick from carbon monoxide. Each year CO causes over 400 deaths in the U.S. not linked to fires, more than 20,000 emergency room visits and over 4,000 hospitalizations. In residential fires, most fatalities are due to smoke inhalation rather than heat or flames.

Some tips to avoid CO poisoning in your home include checking or replacing your CO detector’s battery in the fall and spring, having your heating appliances serviced by a qualified technician annually, not using portable flameless chemical heaters indoors, and making sure gas appliances and chimneys are properly vented.

Combination CO and smoke detectors should be installed on each level of the home and outside separate sleeping areas.

More than 2,390 people in the U.S. die every year from home fires. In typical scenarios, there is as little as one to two minutes to escape after the smoke alarm sounds. The risk of dying in a fire becomes twice as high in a home without a working smoke alarm.

To report a dangerous product or product-related injury, visit SaferProducts.gov.


Editor's note: This article was originally published on April 13, 2023. It has been updated to reflect new information.

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