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Radio-Interlinked Battery Powered Smoke & Heat Alarms - UltraFire UB1RF Series

4.8 out of 5 stars
Save 17%
From: £29.99 inc VAT
£24.99 ex VAT
Product Overview

UltraFire battery powered heat and optical smoke alarms can be radio-interlinked with each other, up to a total of 50 units, to create a wireless alarm system within your home. Powered by two 1.5V alkaline AA batteries, these alarms have a wireless range of up to 100m in open air and 35m indoors. Heat alarms are designed for use in areas prone to false alarms caused by dust or steam and cooking fumes, such as kitchens, garages and unconverted loft spaces. Optical smoke alarms are less susceptible to false alarms caused by cooking fumes, making them suitable for installation near (but not in) kitchens as well as in living rooms, bedrooms, hallways, and landings. Optical smoke alarms are also suitable for rooms which have traditionally been protected by ionisation alarms.

Please note: These Grade F2 alarms are NOT suitable for the new fire and smoke alarm standards in effect in Scotland from February 2022. To meet those requirements please choose from our dedicated selection of Scottish compliant alarms.

  • Battery powered alarms - AA batteries included
  • If one alarms detects smoke / fire, all alarms in the system will sound
  • CE marked, certified and Kitemarked
  • Both alarms feature a large central test / hush button
  • A total of 50 compatible units can be interlinked
  • Suitable for installations complying to BS 5839-6: 2019 Grade F2
  • Digital 'house coding' prevents interference from neighbouring systems
  • RF range of 35m in buildings (100m outdoors)
  • No central alarm panel or master unit required
  • Safelincs Exclusive 5 Year Warranty
  • Supplied with fixings: 2 x screws and 2 x rawl plugs
  • Alarms sold separately
Technical Data
Product Code
Optical Smoke Alarm UFUBS1RF
Heat Alarm UFUBH1RF
Brand UltraFire
Battery Type

2 x AA alkaline

Dimensions (HxDia)

UBS1RF Smoke Alarm: 35x125mm

UBH1RF Heat Alarm: 40x102mm

Operating Temperature

0°C to +40°C

Relative Humidity

UBS1RF Smoke Alarm: Up to 93%

UBH1RF Heat Alarm: 10% to 95%

Sound Output


Weight 0.18kg
Product Datasheets
FAQs (2)
Q. How long do the batteries last in smoke alarms?

The 9V alkaline batteries and AA alkaline batteries generally last 12 to 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. What sort of smoke alarm system would I need to install for a HMO?

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.

Pricing & Availability

Model Stock Price
Optical Smoke Alarm
Product Code: UFUBS1RF
Stock Level:
More than 20 in stock Expected dispatch: Today

£29.99 inc VAT

£24.99 ex VAT

Heat Alarm
Product Code: UFUBH1RF
Stock Level:
More than 20 in stock Expected dispatch: Today

£29.99 inc VAT

£24.99 ex VAT

Delivery Options

The following delivery options are available on this product.

Economy Delivery

£4.99 inc VAT - Orders will be delivered in 3-5 working days by Hermes

Express Delivery

£8.10 inc VAT - Orders will be delivered in 1-2 working days by Hermes

Excellent Warranty

This product is supplied with a 5 year manufacturers warranty as standard

Customer Reviews

12 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: 5 / 5 Stars

Reviewed by: J R

A good product and works well.

Published on: 15th September 2021

Rating: 5 / 5 Stars

Reviewed by: P H

Easy installation and works perfectly

Published on: 10th May 2021

Rating: 5 / 5 Stars

Reviewed by: M W

Works really well

Published on: 4th May 2021

Rating: 5 / 5 Stars

Reviewed by: J T

Very good product and easy to instal The radio link took a little time to set up all 5 alarms but now works well.

Published on: 10th March 2021

Rating: 5 / 5 Stars

Reviewed by: J T

Very good product andceasy to instal. The radio link was easy to set up and now works well with the 5 other alarms

Published on: 10th March 2021

Rating: 5 / 5 Stars

Reviewed by: T W

Work well,gives peace of mind in our house which is 3000 square

Published on: 12th December 2020

Rating: 4 / 5 Stars

Reviewed by: T W

As above

Published on: 12th December 2020

Rating: 5 / 5 Stars

Reviewed by: M D

Exactly what I was looking for - very good.

Published on: 25th September 2020

Rating: 4 / 5 Stars

Reviewed by: P T


Published on: 11th September 2020

Rating: 5 / 5 Stars

Reviewed by: A W

Simple to install, including automatic wireless connections

Published on: 17th August 2020

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