FA6615-R

Optical Smoke Alarm, Replaceable Batteries

Smoke Alarm 5 Year Warranty Kitemark Battery included Battery Silence Push to fit

Product description

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
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BUY ONLINEPRODUCT SUPPORT

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.

Installation & setup

Get the help and support you need to easily set up and install your FireAngel alarm for instant protection.

Installation guide

Installation guide

Click the icon to find out more about installing your smoke alarm

Maintenance guide

Maintenance guide

Click the icon to find out how to maintain and test your alarm

Resources

To ensure you install the right alarm for your home, and one that's compliant with your local fire regulations, review our manual and data sheet or get in touch with our customer service team.

Product manual

Product manual

Click the icon to download the product manual

Datasheet

Datasheet

Click the icon to download the product datasheet

Related FAQs

  • 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
  • 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
  • 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
  • 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
  • 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
  • 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
See all faqs

Extend your protection

Protecting your home and loved ones is easier than ever with our range of smoke, heat, and carbon monoxide alarms. To ensure complete coverage, it’s essential to place the right alarm in the right location. Check out what alarms are right for you on our help to buy quiz.

For even greater peace of mind, consider upgrading to our Pro Connected Range. These smart alarms offer wireless interlinking, meaning if one alarm is triggered, all alarms in your home will sound. Plus, they can be monitored through our FireAngel Connected smartphone app, whether you’re at home or away.

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Reviews from our customers

MA0270R1 FireAngel - Quiet Self Test Blog Assets Draft 1-01

“Perfect replacement for my angel smoke alarm, easy to fit.”

Amazon Customer, Originally posted on amazon.com

related-1

“For ease of installation and maintenance these are now my go to fire alarms. First they use AA batteries, so no fiddling about with those annoying clip on 9V batteries and the 5 year battery life seems ideal. Second the hardware supplied to screw to the ceiling is perfect, just right for the job. Third they are easy to test with the push of a large button.”

Amazon Customer, Originally posted on amazon.com

Image 'Lifestyle Temperature 2' (FA3322X4)

“Much better than the old 9v and easy to change and put up. Would not use anything else now.”

Amazon Customer, Originally posted on amazon.com

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Got a burning question? Get in touch

If you can't find what your looking for on our blogs and looking for further guidance and advice, our UK-based Customer Support team are on hand all week from 8:30am until 5:30pm, they can answer any further queries you may have on our products, solutions or services.