![How to Replace Hardwired Smoke Detector – Safely Update Your Smoke Detectors with Kidde FireX - YouTube How to Replace Hardwired Smoke Detector – Safely Update Your Smoke Detectors with Kidde FireX - YouTube](https://i.ytimg.com/vi/ZAqqbQOidh8/maxresdefault.jpg)
How to Replace Hardwired Smoke Detector – Safely Update Your Smoke Detectors with Kidde FireX - YouTube
![Universal Security Instruments USI-1204 Hardwired Ionization Smoke and Fire Alarm with Backup Battery Universal Security Instruments USI-1204 Hardwired Ionization Smoke and Fire Alarm with Backup Battery](https://www.universalsecurity.com/images/products/USI-1204/USI-1204.jpg)
Universal Security Instruments USI-1204 Hardwired Ionization Smoke and Fire Alarm with Backup Battery
![Bundle of 3 First Alert Hardwired 120-Volt AC Smoke Alarm with Plugs, SA9120BPCN | First Alert Store Bundle of 3 First Alert Hardwired 120-Volt AC Smoke Alarm with Plugs, SA9120BPCN | First Alert Store](https://www.firstalertstore.com/store/images/products/large_images/sa9120bpcn-hardwired-120-volt-ac-smoke-alarm-with-adapter-plugs-mp.jpg)
Bundle of 3 First Alert Hardwired 120-Volt AC Smoke Alarm with Plugs, SA9120BPCN | First Alert Store
![X-Sense Hardwired Smoke Detector, Hardwired Interconnected Smoke Alarm with Battery Backup, Interconnects Up to 18 AC-Powered Alarms, XP04-S, 1-Pack - - Amazon.com X-Sense Hardwired Smoke Detector, Hardwired Interconnected Smoke Alarm with Battery Backup, Interconnects Up to 18 AC-Powered Alarms, XP04-S, 1-Pack - - Amazon.com](https://m.media-amazon.com/images/I/61+MOPwogIL._AC_UF1000,1000_QL80_.jpg)