Kidde® FireX Direct Wire Combination Carbon Monoxide and Ionization Smoke Alarm with Hush - 4 Pack at Menards®
Kidde Battery-operated Ionization Sensor at Lowes.com
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 Brk 6-Pack Hardwired Ionization Sensor Smoke Detector in the Smoke Detectors department at Lowes.com
Kidde 10-Year Battery-Operated 3-Volt at Lowes.com
Kidde Smoke & Carbon Monoxide Detector, Hardwired, Interconnect Combination Smoke & CO Alarm with Battery Backup, Voice Alert, Pack of 6 - Amazon.com