![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
![First Alert Battery-operated Photoelectric Sensor Smoke Detector in the Smoke Detectors department at Lowes.com First Alert Battery-operated Photoelectric Sensor Smoke Detector in the Smoke Detectors department at Lowes.com](https://mobileimages.lowes.com/productimages/8c41b023-b8c3-4b13-9191-ceb877209ea3/09146390.jpg)
First Alert Battery-operated Photoelectric Sensor Smoke Detector in the Smoke Detectors department at Lowes.com
![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://images.thdstatic.com/productImages/656fcb7d-4d69-47b0-8ca2-245b8a7c2843/svn/kidde-hardwired-smoke-detectors-21030967-64_600.jpg)
Kidde Firex Smoke Detector, Hardwired with nine-V Battery Backup & Front-Load Battery Door, Smoke Alarm, 4-Pack 21030967 - The Home Depot
![Amazon.com: Ecoey WiFi Smoke Detector, WiFi Smoke Alarm with Photoelectric Technology and LED, Smoke Alarm with Test&Silence Function and Low Battery Warning for Home (Not 5G), TUYA APP, FJ158D-H04, 2 Packs : Amazon.com: Ecoey WiFi Smoke Detector, WiFi Smoke Alarm with Photoelectric Technology and LED, Smoke Alarm with Test&Silence Function and Low Battery Warning for Home (Not 5G), TUYA APP, FJ158D-H04, 2 Packs :](https://m.media-amazon.com/images/I/61YRU7KFEjL.jpg)