Universal Security Instruments SS-770-24CC 9-Volt Battery Micro Profile Design Ionization Smoke Alarm
Universal Security Instruments SS-770 ionization smoke and fire alarm with micro profile design is a compact 9-Volt battery-operated alarm. Features include an audible 30-day low battery warning, alarm power and test button and a loud, 85-decibel horn. Ideal for replacement of most existing smoke alarms, offering fast and easy installation--no wiring required.