FireAngel Optical Smoke Alarm - FA6620 10-Year Battery Smoke Alarms for Home with Test/Silence Button - Replacement for FireAngel ST-622/ST-620 - Early Smoke Detector Fire Alarm - White
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FireAngel Optical Smoke Alarm - FA6620 10-Year Battery Smoke Alarms for Home with Test/Silence Button - Replacement for FireAngel ST-622/ST-620 - Early Smoke Detector Fire Alarm - White

Product ID: 419152260
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Details

  • Brand
    Fireangel
  • Style
    New Gen Single
  • Power source
    Battery
  • Colour
    White
  • Product dimensions
    3.2D x 11.8W x
  • Item weight
    138 Grams
🔥10-year sealed lithium battery
👁️advanced optical smoke sensor
🛠️quick twist & lock installation

Description

🔥 Stay ahead of danger with 10 years of silent, smart protection!

  • EFFORTLESS SETUP - Innovative twist-and-lock baseplate installs in minutes—no electrician needed, just 2 screws and you’re done.
  • SEAMLESS REPLACEMENT - Compatible with FireAngel ST-622/ST-620 models for a smooth upgrade without rewiring or extra tools.
  • DECADE LONG PEACE OF MIND - Built-in 10-year sealed lithium battery means zero hassle and uninterrupted protection for your home’s lifetime.
  • PRECISION SMOKE DETECTION - Advanced optical sensor detects slow-burning fires early while minimizing false alarms from cooking fumes.
  • CERTIFIED SAFETY ASSURANCE - CE and UKCA marked, BS EN 14604:2005+AC:2008 certified, ensuring trusted, professional-grade fire safety.

The FireangelOptical Smoke Alarm FA6620 combines cutting-edge optical sensing technology with a 10-year sealed lithium battery, delivering reliable early fire detection and minimal false alarms. Designed for easy installation and certified to rigorous safety standards, it’s the perfect long-term upgrade for modern homes seeking hassle-free, professional-grade fire protection.

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Specifications

ManufacturerFireAngel
Part NumberFA6620-R
Batteries1 CR123A batteries required. (included)
Item model numberFA6620-R
SizeSingle Pack
ColourWhite
StyleNew Gen Single
MaterialPlastic
PatternSingle
ShapeCircular
Power SourceBattery Powered
Installation methodInstall in a matter of minutes with only 2 screws required (not included) to secure the baseplate, then twist the alarm in to place
Item Package Quantity1
Cutting Diameter118 Millimetres
Included Components1 x Baseplate, 1 x Instruction Manual, 1 x Optical Smoke Alarm complete with Sealed Lithium Battery
Batteries included?Yes
Batteries Required?Yes
Battery Cell TypeLithium
Assembled Diameter118 Millimetres
Item Weight138 g

Have a Question? See What Others Asked

so this is not scotland compliant only compliant for england and wales? do not buy for scotland as you cannot use it
Hello, Can this be affixed to the ceiling using magnets or heavy duty velcro strips?
Can this be used to replace the discontinued model Deta 1151?
I’ve been told I need to fit a heat alarm that will link with fire alarm; is this possible with this product?

Reviews

A**R

Fault item

This item has gone faulty with in the manufacturer warranty.Fireangel has a 5 years warranty and 10 years battery life.Can I get it replaced.

M**H

Excellent smoke alarms - FireAngel quality you can trust

I'm a loyal FireAngel customer and these smoke alarms maintain the brand's excellent reputation. The quality and reliability are second to none, which is exactly what you want from a safety device.Installation is straightforward and they're up and running quickly. The optical sensor technology works perfectly - sensitive enough to detect real smoke threats but smart enough to ignore false alarms like vaping, which is a huge advantage over cheaper detectors.The alarm tone strikes the perfect balance - loud enough to wake you and alert the household, but not so overwhelming that it's painful. There's no annoying constant beeping during normal operation either.The 10-year battery life is fantastic - set and forget peace of mind. The white finish looks clean and unobtrusive on the ceiling.Pro tip: pair these with magnetic mounting pads (as mentioned in my other reviews) for incredibly easy installation without drilling.These are premium smoke alarms that justify the price with superior performance and reliability. When it comes to fire safety, I wouldn't trust anything else.Highly recommended for anyone serious about home safety.

I**R

New fire alarm

Have just installed this as last one wasn’t working properly. Has a 10 year battery life and only time will tell if that’s true.

C**N

No home should be without them, small price to save a life

Another essential, local fire brigade recommended brand, blue light is great for helping to orientate yourself in dark smoke. Wouldn't be without them, great value and quality, last a long time and the alarm will definitely wake you. Very easy to install and delivery very fast.

P**L

Easy to mount and seems to work well.

Very easy to mount on the ceiling. I was able to use the previous smoke alarms screw holes thanks to the options available on the base plate. The main unit just twists on or off the base plate, the battery is only connected when its twisted onto the base plate. Good quality device, seems to work well when i tested it. small red flshing light to tell you its operational still.

K**T

Quick fit, especially if you had an older FireAngel Alarm!

I bought these after I discovered that the old ones in my new home were due to be replaced next year and the batteries were dead. The old ones were FireAngel too so I hoped i would just be able to fit them to the existing ceiling brackets (anything to make life a little easier). These fitted perfectly. There are no batteries to replace (as it has a 10 lithium battery) so all I have to do is minor maintenance. Be aware that the unit is only activate when secured in its bracket.I thought that they were decently priced for 2 (although there are cheaper ones out there).

A**T

Good upgrade over the old style

I have had this for over a year now.The old one would go off when the battery dropped or the oven door was open.This one seems to eliminate the false triggers. I think maybe once in over a year.It does have a built in battery so eventually it will have to be replaced which seems a waste of plastic.I would recommend this if you have an old one that goes off all the time.

S**N

Dissapointed!

All seemed ok until 6 months old when the battery died on one unit. Tried the test button but to no avail. Paid premium price for these as they’re supposed to have a 10 year battery which cannot be changed. Now I don’t only have to buy a new battery but also a new smoke detector. Glad we checked them as we obviously rely on them to protect us. I bought 4 when we moved in to our new house….hope the other 3 don’t also die after just 6 months.

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Fast shipping and excellent packaging. The Leatherman tool feels very premium and sturdy.

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Fatima A.

Best international shipping I've ever tried. Worth every penny!

3 days ago

Zainab N.

Fantastic and great service. Shipping was faster than expected.

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Fireangel Optical Smoke Alarm Fa6620 10 Year Battery Smoke Alarms | Desertcart UAE