General Information Type of power supply: integrated, lifelong power supply Battery included: yes Types of detected threats: smoke Type of sensor: photoelectric Display: no Test button: yes Hush button : yes Low battery indication: yes Failure indication: yes End of life indication: yes Alarm volume (db): ≥85/3m Life time of the sensor: 10 years Compliance with standards: EN 14604:2005/AC1:2008 Dimensions (width x height x depth [mm]): Ø45 / 42 Other features: BSI certificate