CALL OUR TEAM NOW 0800 612 6537 Also FREE from UK mobiles

9V Optical Smoke Alarm with Escape Light - First Alert SA720CEUK

More than 20 in stock Expected dispatch: Today
18 Customer Reviews
£14.75 inc VAT
£12.29 ex VAT
Product Overview

The First Alert SA720CEUK is a 9V battery powered optical smoke alarm with built-in escape light, ideal for installing in bedrooms, landings and hallways. Upon activation, the smoke alarm sounds a loud 85dB warning alarm and the super bright escape light automatically illuminates, helping to light the escape route in an emergency. The SA720CEUK requires no wiring whatsoever and features a test and hush button.

  • Battery: 9V alkaline battery (included)
  • Warranty: 10 year warranty
  • Test and hush button feature
  • CE marked and tested to BS EN 14604
  • Suitable for installations complying to BS 5839-6: 2019 Grade F2
  • Built-in super bright escape light automatically illuminates on activation
  • Helps to illuminate your escape route from the property
  • Loud 85dB warning alarm
  • Optical smoke sensor - quick to detect slow smouldering fires
  • Supplied with fixings; 2 x screws and 2 x rawl plugs
  • Product warranty and life commences from date of purchase
Technical Data

Technical Data

This is the technical data for the 9V Optical Smoke Alarm with Escape Light - First Alert SA720CEUK.

Product Code 1ASA720CEUK
Alternative Product Codes SA720, SA720CE, SA720CEUK
Weight 0.32kg
Dimensions (HxDia) 50x120mm
Battery Type 9V alkaline
Sound Output 85dB
Warranty 10 years

Product Datasheets

The following datasheets are available for this product.

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 that can originate from upholstery type materials and over-heated wiring. Also, an optical smoke alarm would be less likely to sound a false alarm than an ionisation would, 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

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


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.
Also see the LACoRS guide for let properties.

Q. What sort of smoke alarm system would I need to install for a HMO?

A. BS 5839-6 recommends that one or two storey HMOs with an individual floor area of no more than 200sqm (not the total of both floors) should have a Grade D smoke alarm system installed. Grade D refers to mains powered smoke alarms with a back up battery power supply. The alarms can be interlinked either by wire or by radio signal and the system does not require a separate fire alarm panel. For HMOs of 3 storey or higher, a Grade A panel system would need to be installed. This can cover the whole of the building, or can be used just for the communal areas with a separate Grade D system installed for the individual dwellings. For both applications, the level of cover should be a minimum of LD3 (in all escape routes) but this may change according to the fire risk assessment.

Show all FAQs

Pricing & Availability

Model Stock Price
Product Code: 1ASA720CEUK Stock Level:
More than 20 in stock Expected dispatch: Today

£14.75 inc VAT

£12.29 ex VAT

Customer Reviews

18 customers have have given this product an overall rating of 4.6 out of 5

Reviews by real customers

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

Rating: 5 / 5 Stars

Reviewed by: JR

Ideal for additional detection in new kitchen/diner area

Published on: 26th February 2018

Rating: 5 / 5 Stars

Reviewed by: MF

Have so far managed to avoid dying in a blazing inferno - would recommend! We've actually purchased this unit to act as a dust monitor in our sandblast room, if the system should develop a leak. For this it works well, and the light gives a visual warning when ear defenders are being worn.

Published on: 16th February 2018

Rating: 5 / 5 Stars

Reviewed by: P

good product had one before for about twenty years so just got another one

Published on: 15th September 2017

Rating: 5 / 5 Stars

Reviewed by: AM

Just what I ordered.

Published on: 16th May 2017

Rating: 5 / 5 Stars

Reviewed by: AM

Logic in exercise great idea to have a light with alarm

Published on: 4th May 2017

Rating: 5 / 5 Stars

Reviewed by: CM

Excellent product and fast delivery

Published on: 17th April 2017

Rating: 4 / 5 Stars

Reviewed by: JL

Have had one for years so wanted straight replacement.

Published on: 7th March 2017

Rating: 4 / 5 Stars

Reviewed by: MP

Very pleased with product

Published on: 25th February 2017

Rating: 5 / 5 Stars

Reviewed by: JC

Light and alarm combined. Easy to install.

Published on: 26th January 2017

Rating: 5 / 5 Stars

Reviewed by: DS

Working perfectly at the moment- quite easy to fit- very satisfied.

Published on: 18th December 2016

Rating: 5 / 5 Stars

Reviewed by: MO

Promot and competitive Bought 4 of these. One was faulty and it was replaced immediately. No fuss.

Published on: 5th November 2016

Rating: 4 / 5 Stars

Reviewed by: PD

Seems well made, easy to fit and commission.

Published on: 4th November 2016

Rating: 5 / 5 Stars

Reviewed by: GB

Easy to fit and test. Works in dust created by machine sander.

Published on: 24th October 2016

Rating: 1 / 5 Stars

Reviewed by: AB

it was faulty and I had to return it. The alarm went off for no reason half an hour after it was installed.

Published on: 9th October 2016

Rating: 5 / 5 Stars

Reviewed by: RP

Nicely finished but not proven in operation!

Published on: 8th May 2016

Rating: 5 / 5 Stars

Reviewed by: KM

Good service and quick delivery. Hopefully it will do its job if ever needed.

Published on: 23rd April 2016

Rating: 5 / 5 Stars

Reviewed by: SD

Great device Great service

Published on: 4th February 2016

Rating: 4 / 5 Stars

Reviewed by: -

First unit didn't work,replacement seems fine,thank you.

Published on: 3rd January 2016

Show All

Delivery Options

The following delivery options are available on this product.

Economy Delivery

£4.68 inc VAT - Delivered in 2-3 working days by Hermes

Next Working Day Delivery

£7.80 inc VAT - Delivered the next working day by Hermes

For dispatch today order within

Looking for more information?

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

Direct Telephone 01507 464181
Direct Email Email Now


Close close

This site uses cookies to improve your experience and for essential functioning of the site. By continuing to use our site you agree to the use of cookies.

Change your cookie settings at any time by clicking on the button at the bottom of each page. Read more about the cookies we use in our Privacy Policy.

By continuing to browse this site you agree to the use of cookies. Read our privacy policy to learn more.