SMOKE DETECTORS FOR HOME: The optical smoke alarm’s sensing chamber 'sees' smoke as it enters, enabling a fast response to slow burning fires with thick white smoke, providing vital fire protection for your household. BRIGHT ESCAPE LIGHT: An extra bright light beam and a loud, clear alarm will alert you to danger and help guide you to safety during the night. FEWER NUISANCE ALARMS: The advanced optical sensor ensures the fire alarm is less prone to false alerts from cooking fumes. For kitchen fire safety, consider our range of heat alarms. EASY TO FIT: Attach the removable baseplate to the ceiling, insert the batteries, and push and twist the alarm to secure. The baseplate is identical to FireAngel smoke alarms ST-622, ST-620, and ST-750, making replacements easy. SAFETY ASSURED: The FA6611-R Fire Angel smoke alarm holds CE and UKCA marks and is certified to EN 14604:2005+AC:2008. Suitable for domestic properties and leisure accommodation vehicles like caravans and motorhomes.