![Kidde Firex Smoke Detector, Hardwired with nine-V Battery Backup & Front-Load Battery Door, Smoke Alarm, 4-Pack 21030967 - The Home Depot Kidde Firex Smoke Detector, Hardwired with nine-V Battery Backup & Front-Load Battery Door, Smoke Alarm, 4-Pack 21030967 - The Home Depot](https://cf-images.us-east-1.prod.boltdns.net/v1/static/66036796001/6332998d-dbea-41fb-852e-569bf8a1b1f4/40b1881c-e0f4-4357-858a-dac31ac94a5e/600x338/match/image.jpg)
Kidde Firex Smoke Detector, Hardwired with nine-V Battery Backup & Front-Load Battery Door, Smoke Alarm, 4-Pack 21030967 - The Home Depot
![Reviews for Kidde Firex Smoke Detector, Hardwired with 9-Volt Battery Backup & Front Load Battery Door, Adapters Included, Smoke Alarm | Pg 2 - The Home Depot Reviews for Kidde Firex Smoke Detector, Hardwired with 9-Volt Battery Backup & Front Load Battery Door, Adapters Included, Smoke Alarm | Pg 2 - The Home Depot](https://images.thdstatic.com/productImages/8b240019-089c-469b-a5f9-5e7252a5c675/svn/kidde-hardwired-smoke-detectors-21029886-1d_600.jpg)
Reviews for Kidde Firex Smoke Detector, Hardwired with 9-Volt Battery Backup & Front Load Battery Door, Adapters Included, Smoke Alarm | Pg 2 - 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 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](https://preview.redd.it/hi-im-going-to-attempt-to-replace-these-firex-smoke-v0-7nce6mtqp4ba1.jpg?width=1080&crop=smart&auto=webp&s=5aa0a38178d57c033559cf3f358ae4c6d8ce0ecc)
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
![Warman Fire Rescue on X: "True story- a senior had a pot boil over, filling her home with smoke and the smoke detector DID NOT ALARM. Her detector was 18 years old! Warman Fire Rescue on X: "True story- a senior had a pot boil over, filling her home with smoke and the smoke detector DID NOT ALARM. Her detector was 18 years old!](https://pbs.twimg.com/media/FDYQZLGXEAgiDia.jpg)