UL Solutions Flags Counterfeit Carbon Monoxide Detectors

The safety organization warns consumers about unauthorized certification marks on detectors sold via Amazon.

Updated on Oct. 25, 2026 in Appliances

Gouache-painted illustration of a wall-mounted carbon monoxide detector, symbolizing home safety awareness in a clean residential setting. — UL Solutions warned consumers that LSENLTY-branded carbon monoxide detectors, model PTH-24D, bear fraudulent certification marks and may fail to alert users. AI Illustration. Upload story photo >

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UL Solutions has issued a public notice identifying unauthorized certification marks on LSENLTY-branded carbon monoxide detectors. The product, model PTH-24D, has not been evaluated to meet established safety standards.

Why it matters

Detectors lacking verified certification may fail to operate correctly, potentially leaving households without warning of dangerous carbon monoxide levels. UL Solutions recommends that consumers immediately stop using these units and replace them with properly certified models.

The affected model PTH-24D is listed with an input voltage of 100-220V and a frequency of 50/60Hz. The issue is tracked under UL Solutions public notice reference number 25PN-5456.

The players

UL Solutions

Headquartered in Northbrook, Illinois, this global safety science company provides independent testing, inspection, and certification services.

Protect International Group Co., Ltd.

This entity is identified as the manufacturer of the LSENLTY-branded carbon monoxide detectors.

The details

The detectors are sold under the brand name LSENLTY and manufactured by Protect International Group Co., Ltd. These products were found on Amazon.com with fraudulent safety labels that were not authorized or tested by the safety organization.

UL Solutions issued the official public notice on October 25, 2026.

Culture Shift

The proliferation of unverified products on global e-commerce platforms represents a departure from traditional safety standards certification processes. This incident highlights the challenges consumers face when navigating the modern online marketplace for essential safety equipment.

Consumers who have purchased LSENLTY-branded detectors should immediately remove the units from service and replace them with certified products. Owners should verify that any new carbon monoxide detector carries a valid, authorized certification mark.

The takeaway

Always check for legitimate safety certification marks when purchasing essential home monitoring devices. Relying on uncertified products can put your household at significant risk if the hardware fails during an emergency.