Looking for a FireAngel ST-622 or ST-620 smoke alarm replacement? Replace your end of life alarm without requiring a new base plate or leaving unsightly holes in your ceiling.

The optical smoke sensing chamber works by ‘seeing’ smoke as it enters the alarm ‑ making it perfect for slow burning fires where there is thick white smoke. For the fastest response to all fire types search for FireAngel Thermoptek Alarms.

• 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
• Featuring a quiet test function which means you’re less likely to wake up loved ones or disturb the neighbours when testing your alarms
• Give yourself vital time to replace the batteries in your alarm by silencing low battery warnings for 8 hours using the sleep easy feature
• Suitable for homes in England and Wales. Not suitable for Scottish homes
• FireAngel alarms are rigorously tested to ensure unrivalled quality and longevity and come with a 5 year manufacturer’s warranty for peace of mind
• The perfect replacement for FireAngel ST-625 model with a simple swap of the baseplates, or for ST-622, ST-620 and ST-750 models using the existing baseplate