The First Alert Wireless Interconnect Smoke Alarm SA511 is a reliable and essential home security device. With a battery backup feature, this smoke alarm ensures continuous protection even during power outages. Manufactured by First Alert, known for their quality products, this alarm comes with a 10-year manufacturer warranty for added peace of mind. Operating at a sound rating of 90 dB, this white smoke alarm is easy to install and provides a safe environment for you and your family.