First Alert 10-Year Battery-Operated Combination Smoke and Carbon Monoxide Detector in the Combination Smoke & Carbon Monoxide Detectors department at Lowes.com
First Alert Smoke and Carbon Monoxide Alarm | Wayfair
First Alert Carbon Monoxide Alarm, 1 ct - Kroger
First Alert Z-Wave Smoke and Carbon Monoxide Alarm, 3-pack | Costco