Fireangel FireAngel Optical Smoke Alarm with 10 Year Sealed For Life Battery & Optical Smoke Alarm with Escape Light & 3 Year Replaceable Batteries, FA6611-R (ST-623E replacement, new gen), White

Product 1: The perfect replacement for FireAngel ST-622, ST-620 and ST-750 models, these alarms will fit on to the existing baseplates, or can be installed easily using the supplied bases and 2 screws

Product 1: With optical sensing technology smoke is rapidly detected as it enters the alarm chamber, for a quick reaction to slow burning fires

Product 1: The alarms come with sealed, tamper proof batteries that will last the lifetime of the alarms. It is recommended that smoke alarms are replaced every 10 years

Product 1: Featuring a quiet test function which means you're less likely to wake up loved ones or disturb the neighbours when testing your alarms

Product 2: The perfect replacement for FireAngel ST-623E models with a simple swap of the baseplates, or for ST-622, ST-620 and ST-750 models using the existing baseplate

Product 2: The extra bright light beam and loud, clear alarm from the FireAngel FA6611-R will ensure you and your family are alerted to danger and are guided to safety. This alarm is perfect for landings, hallways and bedrooms

Product 2: The optical sensing technology detects smoke as it enters the alarm chamber, for a quick reaction to slow burning fires

Product 2: The alarm is supplied with 2 x AA batteries which can be replaced upon hearing the low battery warning, it is recommended you replace the alarm after 10 years