First Alert SMI100-AC Smoke Detector & Alarm, AC Powered Battery Backup-BRK
✔️ Genuine First Alert Smoke Detector – Model SMI100-AC. ✔️ AC Powered with 9V Battery Backup for Continuous Protection. ✔️ LED Indicator Shows Power and Alarm Status. ✔️ Photoelectric Smoke Sensor for Fast and Accurate Detection.