This Smartwares smoke alarm is equipped with a sealed 10-year battery and a photo-electric sensor that reacts quickly to smoldering fires. It features a loud 85db alarm sound and a low battery indicator to alert you when the battery needs replacing. The smoke detector also has a hush function to temporarily decrease sensitivity and a convenient test button. It has received the "Q" seal of approval, ensuring its longevity and resistance to external influences while minimizing false alarms. This alarm is designed for easy installation and cleaning.