Basket (0) My Account Help Guides
OPEN 7 DAYS A WEEK 0800 612 6537 Lines open today 8am - 9pm

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

5 Customer Reviews
From: £35.99 inc VAT
£29.99 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.

  • 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
Heat Alarm UFUBH1RF
Optical Smoke Alarm UFUBS1RF
Brand Ultrafire
Battery Type

2 x AA alkaline

Dimensions (HxDia)

UBH1RF Heat Alarm: 40x102mm

UBS1RF Smoke Alarm: 35x125mm

Operating Temperature

0°C to +40°C

Relative Humidity

UBH1RF Heat Alarm: 10% to 95%

UBS1RF Smoke Alarm: Up to 93%

Sound Output


Weight 0.18kg
Product Datasheets
FAQs (7)
Q. How do I safely dispose of my old smoke alarms?

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. How are smoke alarms fitted to the ceiling?

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.

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.

Q. How long do smoke alarms last before needing replacement?

It is recommended that smoke alarms are replaced after 10 years. This is because the sensors in the smoke alarms become less sensitive and may not activate when a fire is present.

Show All

Pricing & Availability

Model Stock Price
Optical Smoke Alarm
Product Code: UFUBS1RF
Stock Level:
More than 20 in stock Expected dispatch: 28th Sep

£35.99 inc VAT

£29.99 ex VAT

Heat Alarm
Product Code: UFUBH1RF
Stock Level:
More than 20 in stock Expected dispatch: 28th Sep

£35.99 inc VAT

£29.99 ex VAT

Delivery Options

The following delivery options are available on this product.

Economy Delivery

£4.79 inc VAT - Orders will be delivered in 3-5 working days by Hermes

Express Delivery

£7.91 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

5 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: 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

Rating: 5 / 5 Stars

Reviewed by: B L

Easy to install worked first time

Published on: 2nd May 2019

Looking for more information?

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

Live Chat Available Now
Direct Telephone 01507 464181


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.