Core Points - UL Solutions issued public notices regarding unauthorized UL certification marks on certain carbon monoxide alarms and detectors, which may pose safety risks [1][2][4] - The affected products include Gedsffati carbon monoxide alarm (model HD08), Gedsffati combined smoke and carbon monoxide alarm (model HD11), HAKINAKU carbon monoxide detectors (model HD09), and carbon monoxide detectors (model HD10) sold by Shenzhen Huidu Technology Co. Ltd. [1][3] - UL Solutions recommends immediate removal and replacement of these products with properly UL certified alarms [2][4] Product Details - The products in question have not been evaluated by UL Solutions for safety standards, and their compliance with safety requirements is unknown [2] - Additional product label details and images are available in public notices on UL's website [3] Company Background - UL Solutions is a global leader in applied safety science, providing testing, inspection, and certification services in over 110 countries [5] - The company has been integral to advancements in fire and life safety technology since 1894, helping manufacturers bring compliant products to market [4][5]