End of life · FireAngel · smoke
FireAngel: A triple beep and a triple flash every 40 seconds
End of life: FireAngel says the alarm may not signal an alert.
- What you see
- Three red flashes about every 40 seconds
- What you hear
- Three chirps about every 40 seconds
If it is sounding a full alarm instead: the maker’s emergency instruction
Smoke alarm
FireAngel: never ignore any alarm. If your smoke or heat alarm goes off and you are not absolutely certain of the source, get everyone out of the house immediately — sleeping children first — and call the fire and rescue service without delay, however small the fire (FireAngel’s FAQ: evacuate immediately and call 999).
From FA6611, FA6615 & FA6620 Optical Smoke Alarm & FA6720 Heat Alarm — User Manual and Fire & Smoke Alarm FAQs.
Carbon monoxide alarm
FireAngel: if the CO alarm goes off with four loud beeps, immediately open doors and windows, stop using any appliances and switch them off, and leave the building taking the CO alarm with you. If it stops after 10 minutes in fresh air, you may have a CO leak: call your gas supplier or the national gas emergency line on 0800 111 999 and wait for instructions. Do not go back in until it has been declared safe.
From Why is my FireAngel CO alarm beeping and flashing? and Fire & Smoke Alarm FAQs.
What FireAngel says to do about this signal
- Replace the alarm immediately. FireAngel says to replace the alarm every 10 years in any case; its support page says the replace-by date is printed on the base.
From FA6611, FA6615 & FA6620 Optical Smoke Alarm & FA6720 Heat Alarm — User Manual and Why is my FireAngel smoke alarm beeping?. If your alarm’s pattern is not exactly this, check the manual for your model: FireAngel models do not all use the same signals.
Other FireAngel signals
End of life on other brands
The same state sounds and looks different on each make — which is why a chirp pattern cannot be read without the brand.
Sources
Every line on this page comes from FireAngel’s own documents, read on the date shown. Nothing is taken from third-party code sites or other makes.
- FireAngel Safety Technology: FA6611, FA6615 & FA6620 Optical Smoke Alarm & FA6720 Heat Alarm — User Manual — FA6611, FA6615, FA6620, FA6720 (document GN5914R3). www.fireangel.co.uk Checked 2026-09-29.
- FireAngel Safety Technology: Why is my FireAngel smoke alarm beeping? — FireAngel smoke and heat alarms (support article). www.fireangel.co.uk Checked 2026-09-29.
- FireAngel Safety Technology: Fire & Smoke Alarm FAQs — FA6615-R, FA6620-R, FA6829S, FA3820-EUX10 (FAQ entries). www.fireangel.co.uk Checked 2026-09-29.
- FireAngel Safety Technology: Why is my FireAngel CO alarm beeping and flashing? — FA3313 and FA3820 CO alarms (support article). www.fireangel.co.uk Checked 2026-09-29.