Kidde Firex Smoke Detector, Hardwired with nine-V Battery Backup & Front-Load Battery Door, Smoke Alarm, 4-Pack 21030967 - The Home Depot
Kidde/Firex I12080 - Hardwire Smoke Alarm with Exit Light and Battery Backup
Kidde Firex Smoke Detector, Hardwired with nine-V Battery Backup & Front-Load Battery Door, Smoke Alarm, 4-Pack 21030967 - The Home Depot
Kidde 21007581 120V Wire - In Smoke Alarm - White - Walmart.com
How to check Expiration & Properly remove Smoke Detector! - YouTube
FireX 10200 9V DC Carbon Monoxide Detector
Kidde Firex Hardwired Inter-Connectable 120-Volt Auxiliary Heat Detector 135 Degree with Battery Backup 21029895 - The Home Depot
Kidde Firex Battery Operated Kitchen Smoke Detector with Photoelectric Sensor 21030007 - The Home Depot
Kidde Firex Smoke Detector, Battery Operated with Front-Load Battery Door, Smoke Alarm 21029922 - The Home Depot
Hi, I'm going to attempt to replace these Firex smoke detectors myself. can I just buy the most recent model of these and swap them out, leaving all the old wires? Or