First Alert CO605 Plug-In Carbon Monoxide Alarm with Battery Backup | First Alert Store
First Alert SC7010B Hardwired Smoke and Carbon Monoxide (CO) Detector with Battery Backup - Walmart.com
Amazon.com: Smoke Detectors No Drill Mount, Adhesive Mount for Smoke Detectors, Fitting All Smoke and Carbon Monoxide Detectors, Mount with no Screws | 6pcs : Everything Else