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10 Year Thermally Enhanced Optical Smoke Alarm - FireAngel ST-620

In Stock
£9.99 ex VAT
£11.99 inc VAT
Product Overview

The first of FireAngel's Green Product Initiative, the ST-620 10 year optical smoke alarm has been designed to be as environmentally friendly as possible; from using a single sealed battery to last the life of the alarm, environmental packaging and removal of unnecessary plastic in the alarm casing. The FireAngel ST-620 optical smoke alarm features a large test/reset button to ease testing as well as an improved universal backing plate for quick fitting.

  • Battery powered smoke alarm - sealed 10 year long life battery
  • CE marked and Kitemarked to BS EN 14604
  • Test and hush button feature
  • Thermoptek optical smoke sensing technology
  • Thermally enhanced for improved detection of smouldering fires
  • Suitable for downstairs hallways, living rooms and bedrooms (unsuitable for kitchens and garages)
  • 10 year manufacturer's warranty
  • Easy to use universal backing plate for quick fitting
  • Suitable for installations complying to BS 5839-6: 2013 Grade F
  • Sensing technology of choice for the UK's Fire and Rescue Service
  • Supplied with fixings; 2 x screws and 2 x rawl plugs
Technical Data

This is the technical data for the 10 Year Thermally Enhanced Optical Smoke Alarm - FireAngel ST-620.

Product Code FAST620
Weight 0.21kg
Dimensions (HxDia) 34x130mm
Battery Type 10 year sealed lithium battery
Sound Output 85dB at 3 metres
Operating Temperature +4 °C to +38 °C
Relative Humidity (non-condensing) Up to 90%

Technical Data Sheets

The following technical data sheets are available for this product:

FAQs (1)

Q. Is the ceiling mounting for the FireAngel 625 identical to that for the FireAngel 620?

A. The FireAngel 625 smoke alarm uses a different base plate. Therefore it would be necessary to install a fresh base plate if switching from one model to the other.

Pricing & Availability

Model Stock Levels Price Weight
Product Code: FAST620
In Stock

£9.99 ex VAT

£11.99 inc VAT

0.21kg

Customer Reviews

154 customers have rated this product and it has an overall rating of 4.7 out of 5

All our reviews are written by real customers that have purchased this product from us and are publsihed without modification.

5 / 5 Stars

Reviewed by: DM

Ideal for what I wanted.

Published on: 9th December 2016

5 / 5 Stars

Reviewed by: BW

Just installed, so I can only say, "all seems well." It's 10-yrs ago since I purchased 2-smoke-alarms from safelincs.co.uk and 1 lasted 10-yrs 6-months and 1 is still on the go. So needless-to-say, I'm very pleased: Recent order arrived securely packaged with speedy a delivery, from a reliable company.

Published on: 7th December 2016

4 / 5 Stars

Reviewed by: BE

We haven't had a fire (yet) so I cannot comment on its efficacy, I am relying on your assurance that it works

Published on: 5th December 2016

5 / 5 Stars

Reviewed by: SH

excellent because despite being near a kitchen it doesn't sound false alarms all the time

Published on: 28th November 2016

4 / 5 Stars

Reviewed by: JS

As above! As above.

Published on: 28th November 2016

5 / 5 Stars

Reviewed by: AC

Safety first for my family. I have replaced all my 4 cheaper smoke alarms with these better ones, it's peace of mind that my family are safer, they are also toast resistant .

Published on: 27th November 2016

5 / 5 Stars

Reviewed by: SH

Very good product, gives you peace of mind.

Published on: 24th November 2016

4 / 5 Stars

Reviewed by: KT

Extremely loud so does the job - recommended by Fire Service I only really needed a replacement for an existing FireAngel so didn't need the fitting part which was wasted. I couldn't find just the replacement part on its own, but would have rated it excellent if this was available without the ceiling fitting. The Fire Service fitted these for me originally about five years ago so this is the first time I've had to replace it. I have two and the other one is still going. When you get the battery bleep to tell you to replace it, you have to buy the whole thing - you can't just replace the batteries as it's a sealed unit. I didn't think the price was bad though and changing it is really easy, you just twist them on and off the ceiling fitting. Obviously if you're buying these for the first time, you'll have to first fix the main fitting that holds the alarm to your ceiling. Hopefully, they won't stop making these to fit the original fitting!

Published on: 23rd November 2016

4 / 5 Stars

Reviewed by: AM

Good Good solid alarm but most did fall off the ceilings tApe not sticky enough

Published on: 18th November 2016

5 / 5 Stars

Reviewed by: SP

very good exceptional value

Published on: 17th November 2016

4 / 5 Stars

Reviewed by: KP

Very good the fire man put the same in don't need to replace the battery Bit expensive but hope it lasts

Published on: 15th November 2016

5 / 5 Stars

Reviewed by: PH

Easy to fix works well

Published on: 14th November 2016

5 / 5 Stars

Reviewed by: DB

Very good

Published on: 14th November 2016

5 / 5 Stars

Reviewed by: LN

No problems Easy installation, good product

Published on: 12th November 2016

5 / 5 Stars

Reviewed by: YS

Great product. Loud alarm. Easy installation.

Published on: 4th November 2016

5 / 5 Stars

Reviewed by: GC

Fitted the brief.

Published on: 31st October 2016

4 / 5 Stars

Reviewed by: JB

Keep well away from dusty areas!

Published on: 31st October 2016

4 / 5 Stars

Reviewed by: MW

Great product, easy to fit, just a shame the light is so bright as we use them in the bedrooms.

Published on: 31st October 2016

4 / 5 Stars

Reviewed by: JS

So far so good Hope it never has to function as a warning

Published on: 30th October 2016

5 / 5 Stars

Reviewed by: JS

Does what it says on the tin - & very easy to install

Published on: 23rd October 2016

4 / 5 Stars

Reviewed by: JG

Feel safer knowing they are installed

Published on: 21st October 2016

5 / 5 Stars

Reviewed by: DJ

Very easy to install and reliable

Published on: 15th October 2016

5 / 5 Stars

Reviewed by: CP

Better than all previous alarms purchased from elsewhere.

Published on: 5th October 2016

4 / 5 Stars

Reviewed by: IB

does what it is supposed to do this is my third one, they are supposed to last ten years, third on in12 years?

Published on: 5th October 2016

5 / 5 Stars

Reviewed by: GH

Great Protection Easy To Install

Published on: 4th October 2016

5 / 5 Stars

Reviewed by: GM

Great quality, fast delivery

Published on: 4th October 2016

5 / 5 Stars

Reviewed by: JE

excellent quality,easy to install. 10 year life warranty

Published on: 2nd October 2016

2 / 5 Stars

Reviewed by: EC

broken on arrival ,missing lug. Unfortunate that it was broken. Should have been picked up easily by quality control. Replacement was however quick and without delay.

Published on: 28th September 2016

5 / 5 Stars

Reviewed by: MB

Has proved very reliable in it's response.

Published on: 26th September 2016

3 / 5 Stars

Reviewed by: JB

I will only know if the product is any good if there is a fire !

Published on: 21st September 2016

4 / 5 Stars

Reviewed by: BH

easy to install. fantastic service from safelincs.

Published on: 20th September 2016

5 / 5 Stars

Reviewed by: AT

Money well spent. Replacing an ageing alarm which was always reliable and easy to maintain.

Published on: 18th September 2016

5 / 5 Stars

Reviewed by: MD

Good quality product. Easy to fit and delivered speedily

Published on: 16th September 2016

4 / 5 Stars

Reviewed by: AL

Fit for purpose My new one bleeps periodically

Published on: 14th September 2016

4 / 5 Stars

Reviewed by: NP

Easy fitting

Published on: 9th September 2016

5 / 5 Stars

Reviewed by: MB

So easy to install and work great.

Published on: 8th September 2016

5 / 5 Stars

Reviewed by: AN

Great, not overly sensitive! Looks neat and tidy. I have an older alarm in my hallway and this new one in my kitchen, the old one goes off for a bit of steam 20 feet away but this one is great and even though it's closer to the kitchen it's not going off when it shouldn't.

Published on: 8th September 2016

5 / 5 Stars

Reviewed by: LC

It is simple to use & effectively does what it says it will.

Published on: 6th September 2016

5 / 5 Stars

Reviewed by: LJ

Exactly as described and easy to put up.

Published on: 5th September 2016

5 / 5 Stars

Reviewed by: IJ

This is an excellent product

Published on: 4th September 2016

5 / 5 Stars

Reviewed by: AA

Excellent product, easy fitting

Published on: 22nd August 2016

5 / 5 Stars

Reviewed by: TF

Excellent exactly as described item works well Good quick service

Published on: 15th August 2016

5 / 5 Stars

Reviewed by: PF

Good product easy to install at a reasonable price

Published on: 4th August 2016

5 / 5 Stars

Reviewed by: KB

Gtreat product,recomended by local NFS

Published on: 1st August 2016

5 / 5 Stars

Reviewed by: MF

Great service

Published on: 24th July 2016

5 / 5 Stars

Reviewed by: CT

Easy to fit and activate.

Published on: 19th July 2016

5 / 5 Stars

Reviewed by: SF

Very good does the job

Published on: 12th July 2016

4 / 5 Stars

Reviewed by: MS

Recommend this item

Published on: 11th July 2016

4 / 5 Stars

Reviewed by: GG

Good product and service!

Published on: 8th July 2016

5 / 5 Stars

Reviewed by: MR

excellent and easy to install

Published on: 7th July 2016

4 / 5 Stars

Reviewed by: RL

Good

Published on: 6th July 2016

5 / 5 Stars

Reviewed by: RB

Great product, very loud alarm, happy with purchase.

Published on: 4th July 2016

5 / 5 Stars

Reviewed by: RK

At last a reliable alarm that doesn't go off when I'm cooking!

Published on: 27th June 2016

4 / 5 Stars

Reviewed by: CS

Good value for money As mounting holes are offset it would be helpful to have a guide mark on the baseplate so unit can be easily lined up visually with the room.

Published on: 26th June 2016

5 / 5 Stars

Reviewed by: MM

Great quality, easy to fit, highly recommended

Published on: 25th June 2016

5 / 5 Stars

Reviewed by: AJ

Very good value, easy to instal

Published on: 12th June 2016

5 / 5 Stars

Reviewed by: JN

This replaced same device installed by LFB some years ago. I was able to dlot it into the existing bracket on the ceiling It had been recommended and previously supplied/installed by London Fire Brigade

Published on: 9th June 2016

4 / 5 Stars

Reviewed by: GL

Working as it should

Published on: 8th June 2016

4 / 5 Stars

Reviewed by: OC

Easy to fit, and tests ok.

Published on: 6th June 2016

5 / 5 Stars

Reviewed by: NM

Good

Published on: 5th June 2016

5 / 5 Stars

Reviewed by: PO

Excellent product good price

Published on: 30th May 2016

5 / 5 Stars

Reviewed by: SK

easy to fit and had the same in our old property

Published on: 27th May 2016

5 / 5 Stars

Reviewed by: PS

Looks a quality product

Published on: 25th May 2016

5 / 5 Stars

Reviewed by: GD

excellent so easy to order quick delivery easy to fit thank you

Published on: 18th May 2016

5 / 5 Stars

Reviewed by: BG

Great product Looks nice, not intrusive and hopefully will do the job.

Published on: 17th May 2016

5 / 5 Stars

Reviewed by: AH

Nice low profile unit at a good price Neater than my old smoke alarms, these are less of a blob on the ceiling. Fed up with changing batteries on my old alarms. Depending on where you buy your batteries, this unit could actually cost less than just the batteries you'd have to buy over 10 years for a unit that uses alkalines! Great combination of optical and thermal detection. Much less prone to false alarms than my old one near the kitchen which used to screech every time we opened the oven. The regular flash from the central ring (to show the unit is armed) is rather bright though, I wouldn't put one over a bed, or in line of sight if you watch telly with the lights down low. Overall, excellent, and I've just ordered another batch to replace all my remaining ionisation alarms.

Published on: 16th May 2016

5 / 5 Stars

Reviewed by: SJ

it tests ok.

Published on: 14th May 2016

5 / 5 Stars

Reviewed by: MC

Easy to fit good unit for rented property

Published on: 13th May 2016

4 / 5 Stars

Reviewed by: RR

Easy to fit

Published on: 13th May 2016

5 / 5 Stars

Reviewed by: GM

easy to install

Published on: 10th May 2016

5 / 5 Stars

Reviewed by: LB

Easy to fit clear instructions

Published on: 1st May 2016

4 / 5 Stars

Reviewed by: RP

product seems good and I like the testing system, just saiting to make sure battery life is as stated

Published on: 1st May 2016

5 / 5 Stars

Reviewed by: DC

A good specification, attractive design and easy to install.

Published on: 30th April 2016

5 / 5 Stars

Reviewed by: RL

Brilliant Good item

Published on: 30th April 2016

5 / 5 Stars

Reviewed by: RU

Fabulous

Published on: 26th April 2016

5 / 5 Stars

Reviewed by: KG

Quality product

Published on: 26th April 2016

5 / 5 Stars

Reviewed by: AW

Easy to fit, was replacing a previous alarm, clicked straight into place.

Published on: 26th April 2016

5 / 5 Stars

Reviewed by: SW

Easy to install and test

Published on: 24th April 2016

5 / 5 Stars

Reviewed by: MM

It replaced an identical alarm.

Published on: 23rd April 2016

5 / 5 Stars

Reviewed by: SB

Excellent product recommended by fire service

Published on: 20th April 2016

5 / 5 Stars

Reviewed by: JU

Easy to install

Published on: 19th April 2016

5 / 5 Stars

Reviewed by: TW

No problems experienced therefore I am confident it will do what it is supposed to do

Published on: 16th April 2016

5 / 5 Stars

Reviewed by: IW

Good Service A good smoke alarm which gives peace of mind

Published on: 16th April 2016

5 / 5 Stars

Reviewed by: BH

The alarm installed ok and is in full working order Regular testing confirms it is working fine.

Published on: 15th April 2016

5 / 5 Stars

Reviewed by: SD

Excellent really pleased with this purchase Excellent service, order arrived within a few days of purchase. Exactly as advertised and would recommend.

Published on: 14th April 2016

5 / 5 Stars

Reviewed by: IK

Excellent service and prompt delivery

Published on: 8th April 2016

5 / 5 Stars

Reviewed by: CR

does the job!

Published on: 5th April 2016

5 / 5 Stars

Reviewed by: MS

easy to install simple instructions.

Published on: 4th April 2016

5 / 5 Stars

Reviewed by: AG

Excellent product and good delivery

Published on: 31st March 2016

5 / 5 Stars

Reviewed by: JW

As described, very good quality

Published on: 27th March 2016

5 / 5 Stars

Reviewed by: BG

Great product with excellent price point

Published on: 27th March 2016

5 / 5 Stars

Reviewed by: AT

Easy to install and unobtrusive

Published on: 22nd March 2016

4 / 5 Stars

Reviewed by: EF

Good quality product

Published on: 22nd March 2016

5 / 5 Stars

Reviewed by: EH

Easy to fit

Published on: 19th March 2016

5 / 5 Stars

Reviewed by: JS

as ordered ,to replace a n other item , delivered on time

Published on: 14th March 2016

4 / 5 Stars

Reviewed by: DO

Small & effective.

Published on: 8th March 2016

5 / 5 Stars

Reviewed by: MW

very good product

Published on: 6th March 2016

4 / 5 Stars

Reviewed by: MM

Used this product before ,replacement easy to fit.

Published on: 5th March 2016

5 / 5 Stars

Reviewed by: MH

Easy to install.

Published on: 26th February 2016

5 / 5 Stars

Reviewed by: SK

Amazing

Published on: 22nd February 2016

5 / 5 Stars

Reviewed by: DF

Simple to fit and check operation Great peace of mind with long life battery and continuous auto indication led

Published on: 21st February 2016

4 / 5 Stars

Reviewed by: RW

Replaces a previous unit, and just fits onto existing mounting.

Published on: 19th February 2016

4 / 5 Stars

Reviewed by: JO

Good qaulity, easy to fit

Published on: 17th February 2016

5 / 5 Stars

Reviewed by: DK

One of the best on market

Published on: 15th February 2016

5 / 5 Stars

Reviewed by: PB

a s

Published on: 13th February 2016

5 / 5 Stars

Reviewed by: ML

cheaper than elsewhere. quality assured products recommended by fire services. excellent customer service and delivery. will definitely use again

Published on: 12th February 2016

5 / 5 Stars

Reviewed by: RH

Looks good, easy to install

Published on: 11th February 2016

5 / 5 Stars

Reviewed by: IF

Functional and eye pleasing

Published on: 8th February 2016

5 / 5 Stars

Reviewed by: DK

Good quality, easy to install and test with the added bonus of a ten year life battery

Published on: 6th February 2016

5 / 5 Stars

Reviewed by: CH

Quick, efficient service. Good value for money Delivery was super fast, Installation was easy,thankfully haven't had to use the alarm, but it tested easily too

Published on: 2nd February 2016

4 / 5 Stars

Reviewed by: JC

Very easy to fit Amazed that the ones replaced had batteries removed in most cases by tenants

Published on: 1st February 2016

4 / 5 Stars

Reviewed by: PB

Good price and quality

Published on: 31st January 2016

5 / 5 Stars

Reviewed by: SA

Easy to install, very clear instructions

Published on: 31st January 2016

5 / 5 Stars

Reviewed by: -

very neat compared to older product.

Published on: 18th January 2016

4 / 5 Stars

Reviewed by: -

Just stopped working Location in Kitchen many have been optimistic

Published on: 9th January 2016

4 / 5 Stars

Reviewed by: -

Very good product If I have a problem it is sorted quickly but it would be better if you was to send any orders in one box not three it creates problems for the delivery people and I do not get the complete order in one go

Published on: 8th January 2016

5 / 5 Stars

Reviewed by: -

Very Good Had one before and that was excellent, so hoped this would be and so far it is.

Published on: 5th January 2016

5 / 5 Stars

Reviewed by: -

Great product,reasonable price quick delivery

Published on: 3rd January 2016

5 / 5 Stars

Reviewed by: -

great all my lets are covered for ten years easy to fit and start

Published on: 3rd January 2016

5 / 5 Stars

Reviewed by: -

excellent product Very fast delivery

Published on: 3rd January 2016

5 / 5 Stars

Reviewed by: -

No problems. Easy set up and worked straight away. I'd recommend this product. Good service and fast delivery from safelincs. Thank you!

Published on: 2nd January 2016

5 / 5 Stars

Reviewed by: -

a good buy feel safe now

Published on: 1st January 2016

5 / 5 Stars

Reviewed by: -

Siimple to use and install

Published on: 1st January 2016

5 / 5 Stars

Reviewed by: -

It does what it says on the box. Great.

Published on: 31st December 2015

5 / 5 Stars

Reviewed by: -

Gives peace of mind

Published on: 30th December 2015

5 / 5 Stars

Reviewed by: -

Very good easy to fit

Published on: 26th December 2015

5 / 5 Stars

Reviewed by: -

arrived quickly. just what I needed!

Published on: 23rd December 2015

5 / 5 Stars

Reviewed by: -

easy to fit and very necessary

Published on: 22nd December 2015

5 / 5 Stars

Reviewed by: -

Good value and a good quality product

Published on: 15th December 2015

5 / 5 Stars

Reviewed by: -

A 'safety' must, easily fitted and a good price

Published on: 13th December 2015

4 / 5 Stars

Reviewed by: -

I will only know it's a success when it warns me of a real fire.

Published on: 13th December 2015

4 / 5 Stars

Reviewed by: -

Simple to install and use

Published on: 12th December 2015

4 / 5 Stars

Reviewed by: -

Easy to install, loud alarm sound

Published on: 11th December 2015

5 / 5 Stars

Reviewed by: -

Really easy product to install, discreet and good value

Published on: 8th December 2015

5 / 5 Stars

Reviewed by: -

This is a vital bit of equipment in any home Excellent quality and service provided thank you.

Published on: 7th December 2015

5 / 5 Stars

Reviewed by: -

Very good quality

Published on: 5th December 2015

4 / 5 Stars

Reviewed by: -

This was easy to install as it was a replacement

Published on: 2nd December 2015

5 / 5 Stars

Reviewed by: -

Very good product and excellent service

Published on: 30th November 2015

5 / 5 Stars

Reviewed by: -

vey good piece of kit

Published on: 30th November 2015

5 / 5 Stars

Reviewed by: -

Got what I ordered and it worked perfectly

Published on: 28th November 2015

5 / 5 Stars

Reviewed by: -

very good easy to install

Published on: 26th November 2015

4 / 5 Stars

Reviewed by: -

Speedy delivery,packed well Easy to fit, haven't had cause to hear them in action !

Published on: 26th November 2015

5 / 5 Stars

Reviewed by: -

Compact easy to fit and tamper proof brilliant in a word.

Published on: 24th November 2015

5 / 5 Stars

Reviewed by: -

Very functional and easy to install.

Published on: 22nd November 2015

5 / 5 Stars

Reviewed by: -

Easy to install,compact design,good loud sound

Published on: 19th November 2015

5 / 5 Stars

Reviewed by: -

We were pleased it is a fire and smoke alarm our old one was just a smoke. This is the only alarm we have that has a ten year guarantee

Published on: 16th November 2015

4 / 5 Stars

Reviewed by: -

Replacement for a similar unit. Easy to fit.

Published on: 16th November 2015

5 / 5 Stars

Reviewed by: -

Compact and stylish Simple to fix

Published on: 14th November 2015

5 / 5 Stars

Reviewed by: -

Seems to work well without going off at the slightest whiff of toast overdone

Published on: 13th November 2015

5 / 5 Stars

Reviewed by: -

Quality product and a good price

Published on: 13th November 2015

5 / 5 Stars

Reviewed by: -

good product excellent service

Published on: 10th November 2015

4 / 5 Stars

Reviewed by: -

Easy to install.

Published on: 9th November 2015

4 / 5 Stars

Reviewed by: -

Cannot complain with 10 year guarantee

Published on: 9th October 2015

5 / 5 Stars

Reviewed by: -

Does exactly what it's supposed to! Easy to fit and does its job, good value too!

Published on: 9th October 2015

Show All Reviews

Delivery Options

The following delivery options are available on this product.

Economy Delivery

Delivered in 2-3 working days by Royal Mail from £3.90 ex VAT - More info

Next Day Delivery

Delivered the next working day by UK Mail from £6.50 ex VAT - More info

For delivery on order within

FireAngel Thermoptek Sensor Technology

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Looking for more information?

If you have any questions or would like more information about this product you can ask one of our specialists.

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Email: support@safelincs.co.uk