SMOKE DETECTORS FOR HOME: The optical smoke alarm makes protecting your home simple. Its optical sensing chamber 'sees' smoke as it enters the alarm, providing a fast response to slow burning fires with thick white smoke. FEWER NUISANCE ALARMS: The advanced optical sensor ensures the FireAngel smoke alarm is less prone to false alerts from cooking fumes. Avoid placing near bathrooms or kitchens. 10-YEAR BATTERY: Each smoke alarm is fitted with a 10-year sealed battery, offering protection for the lifetime of the device without needing to change the batteries. EASY INSTALLATION: Fitted with a removable base plate, secure it to the ceiling using the screws provided. Push and twist to secure the device. SAFETY ASSURED: Suitable for domestic premises, including leisure accommodation vehicles, it comes with a 5-year warranty., Weight: 0.30423792156 Pounds, Manufacturer: Fire Angel