Check the listing for details. CODE ONE Carbon Monoxide Alarm Detector Works When Power Outage “ NEW SEALED”. Color: White, Condition: New, Made in China. Listed at 14.99 USD. The CODE ONE Carbon Monoxide Alarm Detector by Kidde is a reliable and essential home security device. This battery-operated detector comes with one sealed battery included, ensuring continuous protection even during power outages. With a sleek white design and smart home compatibility, this model (KN-COB-LP2) offers peace of mind for homeowners in China and beyond. Perfect for home improvement and home garden projects, this carbon monoxide alarm detector is a must-have for any household looking to safeguard against potential gas leaks.As always, we combine shipping and refund you the difference, you pay what we pay. Domestic US onlyLiking more than one item? Combine shipping and save. You pay what we pay