10 Year Longlife Battery Optical Smoke Alarm - UltraFire ULLS10

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Front view of the ultra fire smoke alarm showing its round white design and central sensor area

ultra fire smoke alarm device shown next to its packaging with branding and product details visible

Ultra fire smoke alarm shown with separate back plate and mounting screws, white circular design

ultra fire smoke alarm shown from an angled view with circular vents and a button on top

Close up of vents on the side of an ultra fire smoke alarm

Side view of the ultra fire smoke alarm showing its vents and curved shape

Close up of a white ultrafire ulls10 smoke alarm sitting on a wooden table with a glowing fireplace in the background

4.8 out of 5 stars

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The UltraFire ULLS10 is a 10 year optical smoke alarm with a sealed lithium battery designed to last the entire lifespan of the alarm, which is powered up automatically when fitted to the mounting plate for easy installation and peace of mind. A combined test & hush button forms almost the entire face of the alarm, which can even silence the end of life warning for up to 10 hours should it occur during the night.

Battery: 10 year sealed lithium battery
Warranty: 10 year manufacturer's warranty
Optical smoke sensor suitable for hallways, landings, living rooms, and bedrooms
Smoke detection chamber designed to reduce false alarms and improve detection of real smoke
Large test & silence button – almost the whole face of the alarm!
End of life warning can be silenced for up to 10 hours
Automatically turns on and off when fitted and removed from the base plate
UltraFire ULLH10 heat alarm for kitchens & garages also available
Suitable for installations complying to BS 5839-6: 2019 Grade F1
CE marked, UKCA marked, and Kitemarked to BS EN 14604: 2005

Customer Reviews

Customer Reviews (23)

4.8 out of 5 stars

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

Reviewer

E L

Looks smart. Works. But mainly compatible with the ceiling fitting on my very old fire angel smoke detector which has stopped working. So major easy to fit

Published on

30th April 2026

Rating: 5 / 5

Reviewer

A R

Unfortunately this item has only just been delivered so we as of yet have not installed it please if you require another review ask me in a week or so.

Published on

18th April 2026

Rating: 5 / 5

Reviewer

C M

Appears to do what it says it does.

Published on

7th October 2025

Rating: 3 / 5

Reviewer

R B

Easy to fit

Published on

26th January 2025

Rating: 5 / 5

Reviewer

P T

Nice item, very easy to install

Published on

6th December 2024

Rating: 5 / 5

Reviewer

P D

Only tested good loud sound

Published on

8th June 2024

FAQs Technical Data

Technical Data

Product Code	UFULLS10
Brand	UltraFire
Manufacturer's Part Number	UF-FHB10
Approvals & Markings	CE Marked
Approvals & Markings	UKCA Marked
Battery Type	Sealed Lithium
British Standard Grade	Grade F1: Battery Powered (10 year longlife)
Colour	White
Compliance	BS EN 14604: 2005
Compliance	BS 5839-6
Connection	Standalone
Fixing Options	Ceiling Mounted
Fixing Options	Screws (included)
Material	Plastic
Operating Temperature	+5°C To +30°C
Positioning	Bedrooms
	Hallways
	Living Rooms
Power Type	Battery Powered
Recyclable	Yes - Valpak's WEEE Distributor Take-back Scheme
Relative Humidity	0% To 85%
Sensor Type	Optical
Sound Level	85dB
Suitability	Home
Warning Type	Audible - Alarm Sounder
Warranty	10 Years
Dimensions (Unit)	Height: 34mm Diameter: 84mm
Weight	80g
Datasheets	Ufulls10 User Manual