General Information Type of power supply: via battery Power supply: 1 x 9V Battery included: yes Types of detected threats: smoke Type of sensor: photoelectric Display: no Test button: yes Hush button : no Low battery indication: yes Failure indication: no End of life indication: no 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]): Ø107 / 35 Other features: BSI certificate