The FireAngel Multi-Sensor Smoke Alarm is a reliable and efficient home security device powered by a single battery. With its sleek white design and advanced features such as battery backup and compatibility with Amazon Alexa, it provides peace of mind for homeowners. The alarm produces an operating sound rating of 90 dB, ensuring that it will be heard even in the event of a power outage. This battery-powered smoke detector is a practical and essential addition to any household, giving families the protection they need in the event of a fire.