![First Alert BRK 3-Pack AC Hardwired 120-Volt Photoelectric Sensor Smoke Detector in the Smoke Detectors department at Lowes.com First Alert BRK 3-Pack AC Hardwired 120-Volt Photoelectric Sensor Smoke Detector in the Smoke Detectors department at Lowes.com](http://mobileimages.lowes.com/productimages/07b538dc-6398-4ba2-b142-0c4e8938a144/11982693.png)
First Alert BRK 3-Pack AC Hardwired 120-Volt Photoelectric Sensor Smoke Detector in the Smoke Detectors department at Lowes.com
![First Alert 3120B 120VAC Hardwired Photoelectric and Ionization Smoke Alarm with Battery Backup | First Alert Store First Alert 3120B 120VAC Hardwired Photoelectric and Ionization Smoke Alarm with Battery Backup | First Alert Store](https://www.firstalertstore.com/store/images/products/large_images/3120B-120vac-hardwired-photoelectric-and-ionization-smoke-alarm-with-battery-backup-5.jpg)
First Alert 3120B 120VAC Hardwired Photoelectric and Ionization Smoke Alarm with Battery Backup | First Alert Store
![Hardwired Smoke Alarm, 10 Years Photoelectric Sensor Smoke Alarm, Interconnect up to 12 pcs with 9V Back up Battery, Mute Function for Home School and Hotel - - Amazon.com Hardwired Smoke Alarm, 10 Years Photoelectric Sensor Smoke Alarm, Interconnect up to 12 pcs with 9V Back up Battery, Mute Function for Home School and Hotel - - Amazon.com](https://m.media-amazon.com/images/I/61CVMMg0VzL._AC_SY355_.jpg)
Hardwired Smoke Alarm, 10 Years Photoelectric Sensor Smoke Alarm, Interconnect up to 12 pcs with 9V Back up Battery, Mute Function for Home School and Hotel - - Amazon.com
![China ABS Material New Case Wireless Door Sensor for Smart Home Manufacturers, Suppliers, Factory - Made in China - JBE China ABS Material New Case Wireless Door Sensor for Smart Home Manufacturers, Suppliers, Factory - Made in China - JBE](https://www.jbe-electronics.com/uploads/202024804/small/bsi-certificate-9v-smoke-detector54116884443.jpg)
China ABS Material New Case Wireless Door Sensor for Smart Home Manufacturers, Suppliers, Factory - Made in China - JBE
![First Alert SA521CN Wireless Interconnected Hardwired Photoelectric Smoke Alarm with Battery Backup Review | Smoke alarms, Wireless, Photoelectric sensor First Alert SA521CN Wireless Interconnected Hardwired Photoelectric Smoke Alarm with Battery Backup Review | Smoke alarms, Wireless, Photoelectric sensor](https://i.pinimg.com/736x/d2/de/e3/d2dee3929ef2a88be6c9b82f0d0b7be4.jpg)
First Alert SA521CN Wireless Interconnected Hardwired Photoelectric Smoke Alarm with Battery Backup Review | Smoke alarms, Wireless, Photoelectric sensor
![First Alert Battery-Operated Combination Smoke and Carbon Monoxide Detector with Voice Alert in the Combination Smoke & Carbon Monoxide Detectors department at Lowes.com First Alert Battery-Operated Combination Smoke and Carbon Monoxide Detector with Voice Alert in the Combination Smoke & Carbon Monoxide Detectors department at Lowes.com](https://mobileimages.lowes.com/productimages/38fc2fe1-df4d-4079-860f-f09f550b09af/09151735.jpg?size=pdhi)