Google Hardwired Smart Combination Smoke and Carbon Monoxide Detector with Voice Alert in the Combination Smoke & Carbon Monoxide Detectors department at Lowes.com
First Alert Hardwired 120V Electrochemical/Ionization Carbon Monoxide and Smoke Alarm (6-Pack) - Power Townsend Company
First Alert Hardwired Combination Smoke and Carbon Monoxide Detector with Voice Alert in the Combination Smoke & Carbon Monoxide Detectors department at Lowes.com