Smoke Detectors

Universal Security Instruments USI/SM/10YR/MINI/3 (3-Pack) 10-Year Battery Powered Mini Smoke and Fire Detector with Photoelectric Sensor

Universal Security Instruments USI/SM/HW10YR/P/3 (3-Pack) Hardwired and 10-Year Battery Backup Smoke Detector with Photoelectric Sensor and Voice Alert