Kidde Firex Smoke Detector, Hardwired with nine-V Battery Backup & Front-Load Battery Door, Smoke Alarm, 4-Pack 21030967 - The Home Depot
Smoke detector | Emirates Fire Fighting Equipment Factory (FIREX)
How to Replace the Battery in a Firex Smoke Alarm | ehow
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
Hardwired Combination CO & Photoelectric Smoke Alarm KN-COPE-IC | Kidde