Smoke & Fire Alarm, Dual Sensors, Battery-Operated

First alert, dual sensor smoke & fire alarm, offers comprehensive monitoring for smoke by using 2 different sensors, a single button silences the alarm & tests the unit, while a loud 85 decibel siren is designed to alert even the soundest of sleepers, battery powered design allows the fire detector to be installed easily, ionization/photoelectric sensor type, note: please check your local building code requirements before installing this product to determine compliance with applicable standards.