Universal Security Instruments Hardwired 2-in-1 Smoke & Fire Alarm 10-Year

Universal Security Instruments Battery Powered Mini Smoke and Fire Detector

Universal Security Instruments Hardwired & 1-Year Battery Backup Smoke Detector

USI Hardwired and 10-Year Battery Backup Smoke Detector with Ionization Sensor

Universal Security Instruments Hardwired Battery Backup Smoke Detector

Universal Security Instruments 9-Volt Battery Operated Smoke and Fire Alarm

Universal Security Instruments Battery Powered Mini Smoke and Fire Detector

UNIVERSAL 10-Year Battery Powered Smoke and Fire Detector with Ionization Sensor