First Alert 2-Pack Battery-operated Combination Smoke and Carbon Monoxide Detector in the Combination Smoke & Carbon Monoxide Detectors department at Lowes.com
First Alert SA521CN-3ST Wireless Interconnect Hardwired Smoke Alarm
FirstAlert Z-Wave Plus Smoke and Carbon Monoxide Detector, 2nd Generation
First Alert BRK AC Hardwired Combination Smoke and Carbon Monoxide Det – Kings Outdoor Lighting