First Alert 2-Pack Battery-operated Ionization Sensor Smoke Detector in the Smoke Detectors department at Lowes.com
Kidde i12060 Hardwire with Smoke Alarm with Front Load Battery Backup Shop Smoke Alarms, Carbon Monoxide Detectors, Combo Alarms, Fire Extinguishers - By Kidde
How to replace your smoke alarm batteries - YouTube
Kidde Combination Smoke & CO Alarm KN-COSM-BA
Smoke Detector Battery Replacement with Hard-Wired Detectors | Ann Arbor with Kids