Report Summary
Consumer's 60 YOM parent was hospitalized because of CO exposure. The product, CO alarm, did not activate when CO levels rose. Other family members were treated for CO onsite.
Product Details
- Product Description: The product is a residential carbon monoxide alarm purchased online from Amazon. The device is a small electronic safety detector designed to monitor carbon monoxide levels in the home and sound an audible alarm when dangerous levels are detected.
The unit is a compact rectangular device with a white plastic housing and a front display panel. It is designed to be installed indoors in residential spaces such as bedrooms, hallways, or living areas to monitor air quality and provide warning of carbon monoxide exposure.
The product appears to be a plug-in or battery-powered carbon monoxide detector intended for continuous safety monitoring. It was installed inside the home according to its intended purpose to detect carbon monoxide gas and alert occupants with an audible alarm if dangerous levels were present.
The product was purchased through the Amazon marketplace and was advertised as a carbon monoxide alarm for home safety.
- Manufacturer/Importer/Private Labeler Name: Shenzhen KanghuaShengshi Industrial Co.,LTD.
- Brand Name: Hembisen
- Model Name or Number: KH-158
- Serial Number: Not Available
- UPC Code: Not available
- SKU#: Not available
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Date Manufactured:
1/10/2026
- Retailer: www.amazon.com
- Retailer State:
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Purchase Date:
2/7/2026
- Product Category: Home Maintenance and Structures
- Product Type: Home Security
- Product Code: Carbon Monoxide Detectors (712)
Incident Details
- Incident Description: A carbon monoxide alarm purchased from Amazon was installed and used in our home for safety monitoring. The product was intended to detect dangerous levels of carbon monoxide and sound an alarm to warn occupants.
On the day of the incident, there was a gas leak in the home that caused carbon monoxide to accumulate indoors. The alarm was installed and powered on as instructed and was located in the living area of the house. However, the device did not activate or sound any warning during the incident.
Because the alarm failed to alert us, the occupants of the home were exposed to carbon monoxide for an extended period of time without warning. Family members began experiencing symptoms consistent with carbon monoxide exposure, including dizziness and difficulty breathing. Emergency medical services were contacted and family members were transported to the hospital for treatment related to suspected carbon monoxide poisoning.
The product being used was a carbon monoxide alarm intended for residential safety monitoring. It was being used in a normal residential setting as a safety detector. At the time of the incident, the device did not provide any audible warning despite the presence of carbon monoxide in the home.
The failure of the alarm to activate created a serious safety risk and may have contributed to the injuries that occurred.
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Incident Date:
3/5/2026
- Incident Location: Home/Apartment/Condominium
Victims Involved
-
- Injury Information: Injury - Hospital Admission
- My Relationship to the Victim: My Parent
- Sex: Male
- Victim's Age When Incident Occurred: 60 years
Comments from the Manufacturer/Private Labeler
Additional Details
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Submitter has product?:
No
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Product was damaged before incident?:
No
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Product was modified before incident?:
- If yes to any, explanation: The product posed a serious safety risk and had already passed the return period. After the incident, we have discarded it.
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Have you contacted the manufacturer?:
No
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If Not, Do you plan to?:
- Report Number: 20260308-D9B96-2147322855
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Report Date:
3/8/2026
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Sent to Manufacturer/Importer/Private Labeler:
3/10/2026
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Report First Publication Date:
3/24/2026
- Category of Submitter: Consumer
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