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10 Year Longlife Battery Optical Smoke Alarm - UltraFire ULLS10

4.8 out of 5 stars
1 unit 2+ units 5+ units

£16.79 inc VAT

£13.99 ex VAT

£16.19 inc VAT

£13.49 ex VAT

£15.59 inc VAT

£12.99 ex VAT

Product Overview

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
Technical Data
Product Code UFULLS10
Alternative Product Codes ULLS10
Brand UltraFire
Battery Type

10 Year Sealed Lithium

Dimensions (HxDia)

34 x 84mm

Operating Temperature

5°C to 30°C

Relative Humidity

< 85%

Sound Output


Storage Temperature

5°C to 30°C

Weight 0.08kg
Product Datasheets
FAQs (3)
Q. Can I put my smoke alarm on the wall, or must it be mounted on the ceiling?

The best location to install your smoke alarm is in the centre of the ceiling rather than on the wall.

During a fire, smoke initially rises and then spreads horizontally. Placing the smoke alarm in the centre of your ceiling means that it is closest to all four points of your room. This ensures that you receive the earliest possible warning of a fire.

For more information, read our guide to positioning your smoke alarm and guide to which smoke alarms are best for each room.

Q. How often should I replace my smoke alarm?

You should replace your smoke alarm every 10 years. This is because the sensors in the alarm become less sensitive and may not activate when a fire is present.

Sign up to our smoke alarm reminder service to be reminded by text or email when your alarm is due to be replaced.

Q. How do I fit my smoke alarm to the ceiling?

Smoke alarms can be either screwed to the ceiling using the holes on the base plate (screws provided), or fixed in place using either a self-adhesive sticky pad or a self-adhesive magnetic mounting kit.

Key Product Features

Large test & silence button covers the face of the alarm

Complete with baseplate, two rawl plugs, and two screws

Suitable for hallways, landings, living rooms, and bedrooms

Automatically turns on / off when fitted / removed from the base

Pricing & Availability

Model Stock 1 unit 2+ units 5+ units
Product Code: UFULLS10 Stock Level:
More than 20 in stock Expected dispatch: Tomorrow
1 unit

£16.79 inc VAT

£13.99 ex VAT

2+ units

£16.19 inc VAT

£13.49 ex VAT

5+ units

£15.59 inc VAT

£12.99 ex VAT

Delivery Options

The following delivery options are available on this product.

Free Economy Delivery

Free of Charge - Orders will be delivered in 5-7 working days with Evri

Standard Delivery

£3.19 inc VAT - Orders will be delivered in 2-3 working days with Evri

Next Working Day Delivery

£6.19 inc VAT - Orders will be delivered the next working day with Evri

For dispatch today order within

Excellent Warranty

This product is supplied with a 10 year manufacturers warranty as standard

Customer Reviews

17 customers have given this product an overall rating of 4.8 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: 4 / 5 Stars

Reviewed by: J L

The alarms are not unnoticeable in respective rooms within the house and give a good clear sound when tested.

Published on: 29th March 2024

Rating: 5 / 5 Stars

Reviewed by: A J

Easy to install and quality product

Published on: 22nd March 2024

Rating: 4 / 5 Stars

Reviewed by: J N

Seems to be working well but only had a short period.

Published on: 21st February 2024

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