Hembisen KH-158 – Product Liability Lawyer

2026-03-17 – A carbon monoxide detector sold on Amazon failed to sound an alarm while family members were hospitalized with acute CO poisoning, according to a report filed with the U.S. Consumer Product Safety Commission (CPSC) SaferProducts.gov database. The incident involves a Hembisen KH-158 combination natural gas and carbon monoxide detector manufactured by Shenzhen Hengbisheng Electronics Co., Ltd. dba HEMBISEN, and highlights a reported warning defect that could endanger lives.

Product Details

– Brand Name: Hembisen
– Manufacturer: Shenzhen Hengbisheng Electronics Co., Ltd. dba HEMBISEN
– Model: KH-158
– Retailer: www.amazon.com
– Incident Report Number: 5919352
– Severity Type Name: Hospital Admission
– Severity Type ID: 10

Incident Overview

On February 25, 2026, family members were rushed to an emergency room after suffering acute carbon monoxide poisoning. According to the CPSC report (ID 5919352, available at https://www.saferproducts.gov/PublicSearch/Detail?ReportId=5919352), the consumer had installed a Hembisen KH-158 detector—marketed on Amazon as a "Combination Natural-Gas and Carbon-Monoxide-Detector Plug-in, 4 Sensors with Carbon Monoxide Alarm, F & Humidity, Explosive Gas Detector Alarm for Home, RV, Apartment" (ASIN B0DBVYCVK7)—in their home. Despite the presence of the device, it failed to sound any alarm or display elevated readings while CO levels reached life-threatening concentrations.

The consumer reported that the device provided a false sense of security and described it as a deceptive and dangerous product. They stated that the detector clearly could not detect carbon monoxide, a potentially deadly gas. The reporter retained the defective unit and expressed willingness to cooperate with a CPSC investigation. The report urges the agency to test the product and initiate a recall to remove it from the U.S. market and Amazon's platform.

Safety Concerns

Immediate Dangers: Carbon monoxide is a colorless, odorless gas that can cause loss of consciousness and death within minutes at high concentrations. A detector that fails to alarm during a real CO event leaves occupants unaware and unable to evacuate or ventilate, directly leading to poisoning and hospitalization.

Long-Term Risks: Repeated or prolonged exposure to lower levels of CO can cause permanent neurological damage, cognitive impairment, and heart problems. A non-functional detector may allow undetected chronic exposure, especially in homes with gas appliances or attached garages.

Who Might Be Affected: Everyone in the home is at risk, but children, pregnant women, older adults, and individuals with respiratory or heart conditions are more vulnerable to CO poisoning. The detector's failure endangers all occupants, particularly during sleep when occupants are most vulnerable.

Warning Signs: Unlike physical hazards, CO poisoning often presents with flu-like symptoms such as headache, dizziness, nausea, and confusion. A properly functioning detector provides the only reliable early warning. The absence of an alarm in this incident meant the family had no warning before severe symptoms required hospitalization.

What Our Clients Say

What Consumers Should Do

Stop Using Immediately: If you own a Hembisen KH-158 detector, unplug it and do not rely on it for CO detection. Replace it with a certified CO alarm from a reputable brand.

Seek Medical Attention: If you or anyone in your household experiences symptoms of CO poisoning—headache, dizziness, nausea, confusion—leave the area immediately and call 911. Seek medical evaluation even if symptoms seem mild.

Preserve the Product: Keep the defective detector, its packaging, and any documentation. Do not return it to the retailer or manufacturer until you have documented the incident and consulted with authorities or legal counsel.

Document the Incident: Take photographs of the product, the installation location, and any communications with the seller or manufacturer. Save receipts, order confirmations, and medical records related to CO exposure.

Report to the CPSC: File a report on SaferProducts.gov (https://www.saferproducts.gov/) to alert regulators and help prevent future injuries. Reference report ID 5919352 if applicable.

Check for Recalls: Visit CPSC.gov to search for recalls on this product or similar CO detectors. Even if no recall is yet issued, monitoring is important.

Consumers who suffered injury or property damage as a result of this product may wish to speak with a product liability attorney about their legal options.

Manufacturer's Response

The manufacturer's official response to this specific incident report is not publicly available at the time of this writing. The CPSC SaferProducts database does not include comments from Shenzhen Hengbisheng Electronics Co., Ltd. dba HEMBISEN regarding report 5919352. The regulatory process typically allows manufacturers to respond after an investigation is initiated.

Legal Help Available

H Law Group is a California product liability law firm representing consumers injured by defective products. The firm handles cases on a contingency fee basis, meaning there is no upfront cost to clients. If you or a loved one was injured by the Hembisen KH-158 or a similar product, contact H Law Group at (888) 499-4948 for a free, no-obligation consultation.