Optical Smoke Alarm - FireAngel SO-601
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9V Optical Smoke Alarm with Test and Hush Button - FireAngel SO-601

Lead time: 3–5 days
7.49 ex VAT
8.99 inc VAT
Product Overview

The FireAngel SO-601 is an optical smoke alarm with toast proof sensing technology, making it less prone to sound falsely when cooking fumes are present. Supplied with a 9V alkaline battery as standard, the SO-601 smoke alarm sounds a low battery warning signal when required, features a large test/reset button for ease of testing, and is LPCB tested to the latest British Standards.

  • Battery powered smoke alarm - 9V alkaline battery included
  • CE marked and LPCB tested to BS EN 14604
  • Features a large test/hush button
  • Easy to test and silence nuisance alarms
  • Optical sensor - less prone to false alarms caused by cooking fumes
  • Ideal for areas adjacent to kitchens e.g. downstairs hallway, dining room, etc.
  • 5 year manufacturer's warranty
  • Suitable for installations complying to BS 5839-6: 2013 Grade F
  • Ergonomic design to blend into your ceiling
  • Supplied with fixings; 2 x screws and 2 x rawl plugs
Technical Data

Technical Data

This is the technical data for the 9V Optical Smoke Alarm with Test and Hush Button - FireAngel SO-601.

Product Code FASO601
Alternative Product Codes SO-601, SO-601x5
Weight 0.24kg
Dimensions (HxDia) 34x131mm
Battery Type 9V alkaline battery
Sound Output 85dB at 3 metres
Operating Temperature +4 C to +38 C
Relative Humidity (non-condensing) Up to 90%
FAQs (9)

Q. What smoke alarm should I use in a bedroom with an en suite bathroom?

A. It is usually recommended to install an optical smoke alarm in a bedroom. This is because optical smoke alarms are slightly quicker at detecting slow smouldering fires than can original from upholstery type materials and over-heated wiring. Also, an optical smoke alarm would be less likely to sound a false alarm than what an ionisation would do if steam/water droplets were present from the bathroom. Detectors should be installed as central to the room as possible; however for your application I would also consider the position of the en suite to make sure that the detector is not in the direct path of the joining door. This is just to try and avoid the chances of a false alarm. No detector is designed for use in bathroom areas.

Q. How do I safely dispose of my old smoke alarms?

A. Safelincs is signed up to Valpak's WEEE (Waste Electrical and Electronic Equipment) Distributor Take-Back Scheme (Registration ID: 7370). Private households can therefore drop off their electronic and electrical fire safety waste at their municipal recycling centre when they are purchasing new products from us. To find your nearest recycling centre, please visit www.recycle-more.co.uk.

Q. How long do the batteries last in smoke alarms?

A. The 9V alkaline batteries last 12~18 months. Lithium batteries will usually last 5x longer than their alkaline counterparts, achieving around 5 years lifetime. Some lithium cells are also rechargeable, and when used in a mains-powered alarm may last for the entire functional lifespan of the alarm. Newer alarm models may also feature a "sealed" lithium battery. These batteries are specialist components which are designed to not be removed or need replacing by the user, and have been tested by the alarm manufacturer to ensure they last for the lifetime of the alarm.

Please Note: the actual lifetime of your batteries depends on how often the alarms are tested or activated, as sounding the alarm draws more power than when the alarms are "waiting" to detect fire. You should also read your alarm's manual to make sure you only use the recommended types and brands of batteries, as failing to follow these instructions may cause the alarm to malfunction, not alerting you in the event of a fire, and might also invalidate the warranty.

Q. Can a smoke alarm be fitted with a sticky adhesive pad in a let property?

A. The sticky pad is suitable for all battery operated smoke alarms. However, we cannot judge if battery alarms are suitable for your let property, as let properties usually require mains powered alarms. There is some advice to this in the governments guides to fire risk assessments. http://www.safelincs.co.uk/Fire-Risk-Assessment/
Also see the LACoRS guide for let properties.

Q. How are smoke alarms fitted to the ceiling?

A. Smoke alarms can be either screwed to the ceiling using the holes on the base plate (screws provided) or fixed using a sticky pad, this can be added to your basket through the ordering process.

Show all FAQs

Key Product Features

Large test/silence button is central to the SO-601

Includes the 9V battery required by the alarm

Status indicator lights clearly visible around the main button

Screws and rawl plugs for installation are included

Product Dimensions

What's Included?

  • 1 x FireAngel SO-601 optical smoke alarm
  • 1 x 9V battery
  • 1 x Fixings set (screws and rawl plugs)
  • 1 x Instruction manual

Product Datasheets

Pricing & Availablity

Model Stock Price Weight
Product Code: FASO601 Stock Level:
Lead time: 3–5 days

7.49 ex VAT

8.99 inc VAT


Customer Reviews

39 customers have rated this product and it has an overall rating of 4.8 out of 5

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

5 / 5 Stars

Reviewed by: GG

Very good item

Published on: 15th September 2017

5 / 5 Stars

Reviewed by: BG

Fit and Forget

Published on: 1st September 2017

5 / 5 Stars

Reviewed by: BD

Easy to assemble and test and hush button very useful.

Published on: 21st August 2017

5 / 5 Stars

Reviewed by: LE

As advertised

Published on: 15th August 2017

5 / 5 Stars

Reviewed by: GH

Excellent! We test all new alarms with artificial smoke. These work every time. Easy to silence.

Published on: 5th August 2017

5 / 5 Stars

Reviewed by: GB

Excellent I'm very pleased with the alarm

Published on: 30th July 2017

5 / 5 Stars

Reviewed by: CH

Does the job just as described - no false alarms when doing toast!!!

Published on: 18th July 2017

5 / 5 Stars

Reviewed by: PF

Brilliant doesn't go off when making toast (not like the other one we had) recommend it to anyone

Published on: 18th July 2017

4 / 5 Stars

Reviewed by: NG

Smoke detectors are fine the screws supplied to fir them are cheap metal, very soft and the philips head is destroyed almost instantly. Used other screws I had. Safelincs informed.

Published on: 28th June 2017

5 / 5 Stars

Reviewed by: RR

Great design. False alarms are now a thing of the past. These new smoke alarms have made false alarms due to toast and other cooking a thing of the past. We have been very please with them and even purchased a carbon monoxide detector of the same brand for our boiler. An excellent product.

Published on: 7th April 2017

5 / 5 Stars

Reviewed by: SA

Easy to install, fast delivery

Published on: 2nd March 2017

5 / 5 Stars

Reviewed by: GS

Excellent. Just what I needed.

Published on: 14th February 2017

5 / 5 Stars

Reviewed by: WC

Excellent smoke alarm - I fitted this just outside my kitchen and have not had the false alarms I had with previous ionising alarms. I trust it to do the job it was designed for.

Published on: 27th January 2017

5 / 5 Stars

Reviewed by: MW

brilliant product. excactly the same as the firebrigade provided us with in the past

Published on: 24th January 2017

5 / 5 Stars

Reviewed by: SA

Perfect Totally solved problem of false alarms when toast was being made in the adjacent kitchen. Also, unlike some new alarms the battery can be replaced.

Published on: 11th January 2017

4 / 5 Stars

Reviewed by: AS


Published on: 2nd January 2017

4 / 5 Stars

Reviewed by: MF

Great product, does everything asked of it. Prefer if battery replacement was on the front.

Published on: 2nd June 2016

5 / 5 Stars

Reviewed by: PM

Does exactly what it says on the box. Fantastic. Great Product, would recommend highly.

Published on: 30th May 2016

5 / 5 Stars

Reviewed by: MP

sensitive and on the ball makes me feel more secure

Published on: 11th May 2016

5 / 5 Stars

Reviewed by: IC

Easy to install and get operating A simple device that is easy to install, change battery and view as operating correctly

Published on: 5th May 2016

5 / 5 Stars

Reviewed by: AL

Simple but effective device

Published on: 22nd April 2016

5 / 5 Stars

Reviewed by: MD

Very good doesn't go off all the time when making toast Easy to assemble great

Published on: 11th April 2016

5 / 5 Stars

Reviewed by: DC

very easy to install and working well

Published on: 4th April 2016

5 / 5 Stars

Reviewed by: JA

Easy to install & doesn't keep going off. I will be in touch again for another one. Friendly helpful staff

Published on: 20th March 2016

5 / 5 Stars

Reviewed by: PW

Easy to install Can detect and eliminate ordinary cooking atmosphere.

Published on: 13th March 2016

4 / 5 Stars

Reviewed by: DH

Neat and seems to work well,not had to use it

Published on: 27th February 2016

4 / 5 Stars

Reviewed by: -

Easy to install, and looks nice on our ceilings :)

Published on: 26th January 2016

5 / 5 Stars

Reviewed by: -

Great Value product.

Published on: 23rd January 2016

4 / 5 Stars

Reviewed by: -

Seems to be fine-not gone off in anger yet Good to be able to match existing

Published on: 14th January 2016

5 / 5 Stars

Reviewed by: -

Great for avoiding false positives in hallway next to kitchen.

Published on: 13th January 2016

5 / 5 Stars

Reviewed by: -

Very good

Published on: 6th January 2016

5 / 5 Stars

Reviewed by: -

great product

Published on: 4th January 2016

5 / 5 Stars

Reviewed by: -

very good product

Published on: 3rd January 2016

5 / 5 Stars

Reviewed by: -

NIce design and easy to use install

Published on: 2nd January 2016

5 / 5 Stars

Reviewed by: -

Good product arrived promptly

Published on: 30th December 2015

5 / 5 Stars

Reviewed by: -

Very reliable product that has the common sense to be mountable to existing fire Angel bases, no fuss no damage.

Published on: 28th December 2015

5 / 5 Stars

Reviewed by: -

Does what it says does not go off with burnt toast Nice smart little alarm, going buy another one soon

Published on: 26th December 2015

5 / 5 Stars

Reviewed by: -

Excellent products and service from Safelincs One item was out of stock but a representative telephoned me to advise that they could either send the other goods of that order and the missing item to follow the next day or send all the order together a day later. They were also happy to suggest alternative goods. Most companies these would not care less if they could not fulfil an order so I was impressed Safelincs take are and time to communicate with their customers and offer options/solutions to any order delays etc.

Published on: 23rd December 2015

4 / 5 Stars

Reviewed by: -

Practical and easy to fit

Published on: 12th October 2015

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Delivery Options

The following delivery options are available on this product.

Economy Delivery

Delivered in 6-12 working days by Royal Mail 3.90 ex VAT - More info

Express Delivery

Delivered in 3-5 days by our specialist courier from 6.50 ex VAT - More info

FireAngel Optical Smoke Alarms

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