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Deta Carbon Monoxide Alarm 1121 Comparison - August 2025

7 Best Deta Carbon Monoxide Alarm 1121 In the UK

1
Best Choice
9.7Exceptional
2
9.5Excellent
3
9.3Excellent
4
Best Value
9.2Excellent
5
9.0Excellent
6
8.9Very Good
7
8.8Very Good
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Model

Kidde 5CO Carbon Monoxide Alarm and Detector with AA Batteries - 10 Year Sensor Life CO Alarm for Home
Model
Kidde 10LLDCO Ten Year Life Carbon Monoxide Alarm Digital Display with Sealed Longlife Battery
Model
Kidde 2030-DCR Compact 10 Year Life Carbon Monoxide Alarm with AA batteries
Model
FireAngel Carbon Monoxide Alarm and Detector - FA6813 10-Year Sensor Life CO Alarm for Home with AA Batteries - Travel, Portable Carbon Monoxide Detector - CO Detector Monitor with Test Button
Model
Carbon Monoxide Detector, 10 Years Battery Carbon Monoxide Alarm, CO Alarm with LCD Display and Test/Silence Button Conforms to EN50291 Standard
Model
Firehawk SML CO7B-10Y, White
Model
STATUS Monoxide Alarm, Home Carbon Monoxide Detector including Batteries, SDCMA3XAA1PB4

Brand

Kidde
Brand
Kidde
Brand
Kidde
Brand
Fireangel
Brand
WISUALARM
Brand
Firehawk Safety Products
Brand
Status

Reviews

84,807 reviews
Reviews
9,864 reviews
Reviews
1,128 reviews
Reviews
1,761 reviews
Reviews
1,899 reviews
Reviews
3,990 reviews
Reviews
648 reviews

Features

Worth the money

9.8
Worth the money
9.6
Worth the money
9.8
Worth the money
9.6
Worth the money
9.4
Worth the money
9.6
Worth the money
9.3

Easy installation

9.9
Easy installation
9.9
Easy installation
9.9
Easy installation
9.8
Easy installation
9.8
Easy installation
9.9
Easy installation
9.9

Simple to use

9.9
Simple to use
9.9
Simple to use
9.9
Simple to use
9.9
Simple to use
9.9
Simple to use
9.9
Simple to use
9.8

Instruction

9.9
Instruction
9.8
Instruction
9.9
Instruction
9.9
Instruction
9.6
Instruction
8.6
Instruction
9.3

Battery duration

9.9
Battery duration
9.6
Battery duration
9.9
Battery duration
9.8
Battery duration
9.6
Battery duration
9.8
Battery duration
9.8

Tech Specs

product dimensions

12.6 x 3.5 x 7.2 cm 115 g
product dimensions
11 x 7 x 4 cm 160 g
product dimensions
9.6 x 6.1 x 3.8 cm 138 g
product dimensions
5 x 12.3 x 8 cm 141 g
product dimensions
11 x 19 x 15 cm 170 g
product dimensions
3 x 3 x 3 cm 80 g
product dimensions
12 x 4 x 11.5 cm 280 g

item weight

115 g
item weight
160 g
item weight
138 g
item weight
141 g
item weight
170 g
item weight
80 g
item weight
280 g

batteries included

Yes
batteries included
Yes
batteries included
No
batteries included
Yes
batteries included
Yes
batteries included
No
batteries included
Yes

power source

Battery Powered
power source
Battery Powered
power source
Battery Powered
power source
Battery Powered
power source
Battery Powered
power source
Battery Powered
power source
Battery Powered

customer reviews

4.7 4.7 out of 5 stars 28, 269 ratings 4.7 out of 5 stars
customer reviews
4.7 4.7 out of 5 stars 3, 288 ratings 4.7 out of 5 stars
customer reviews
4.7 4.7 out of 5 stars 376 ratings 4.7 out of 5 stars
customer reviews
4.7 4.7 out of 5 stars 587 ratings 4.7 out of 5 stars
customer reviews
4.6 4.6 out of 5 stars 633 ratings 4.6 out of 5 stars
customer reviews
4.6 4.6 out of 5 stars 1, 330 ratings 4.6 out of 5 stars
customer reviews
4.6 4.6 out of 5 stars 216 ratings 4.6 out of 5 stars

style

Single Unit
style
Digital Alarm Sealed Battery
style
Single Unit
style
Single Pack
style
Morden
style
Compact, Stylish
style
Classic

battery cell type

Alkaline
battery cell type
Lithium
battery cell type
Alkaline
battery cell type
Alkaline
battery cell type
Lithium Manganese Dioxide
battery cell type
Lithium
battery cell type
Alkaline

batteries required

Yes
batteries required
Yes
batteries required
No
batteries required
Yes
batteries required
No
batteries required
No
batteries required
Yes

batteries

2 AA batteries required. included
batteries
1 Lithium Metal batteries required. included
batteries
2 AA batteries required.
batteries
-
batteries
1 CR123A batteries required. included
batteries
1 CR2 batteries required.
batteries
3 AA batteries required. included

included components

Screws for wall mounting optional , Batteries
included components
1 x Kidde 10LLDCO Carbon Monoxide Alarm with Digital Display
included components
-
included components
Carbon Monoxide Alarm, 2 x AA Batteries, Manual
included components
Adhesive Sticker, User Manual, Positioning Sticker, Screws Package, Carbon Monoxide Detector
included components
CO7B-10Y
included components
Batteries

item package quantity

1
item package quantity
1
item package quantity
-
item package quantity
1
item package quantity
1
item package quantity
1
item package quantity
1

color

White
color
White
color
White
color
-
color
White
color
White
color
White

pattern

-
pattern
single
pattern
-
pattern
Single
pattern
1pack
pattern
-
pattern
Alarm

Available On

Available On
Available On
Available On
Available On
Available On
Available On

Our Top 3 Picks

Here are the top 3 recommended products with more information to help you find the right product for you
  • 9.7
    1
    Kidde
    23% Off

    Kidde 5CO Carbon Monoxide Alarm and Detector with AA Batteries - 10 Year Sensor Life CO Alarm for Home

    9.9 Easy installation
    9.9 Simple to use
    9.9 Instruction

    Why we love it

    Portable and easy to install.
    Long-lasting with a 10-year alarm life.
    Comes with a 7-year warranty.
  • 9.5
    2
    Kidde

    Kidde 10LLDCO Ten Year Life Carbon Monoxide Alarm Digital Display with Sealed Longlife Battery

    9.9 Easy installation
    9.9 Simple to use
    9.8 Instruction

    Why we love it

    Long-lasting 10-year battery life.
    Digital display shows real-time CO levels.
    Ideal for home safety assurance.
  • 9.3
    3
    Kidde

    Kidde 2030-DCR Compact 10 Year Life Carbon Monoxide Alarm with AA batteries

    9.9 Easy installation
    9.9 Simple to use
    9.9 Instruction

    Why we love it

    Accurate CO detection at 50 ppm.
    Compact design fits anywhere.
    Long-lasting with low battery warning.

Our ranking system

The TopChoice.co.uk Team selects top-of-the-line items from a wide selection and conducts rigorous evaluations on almost all the products available on the internet. We rank each product based on how well it matches our criteria.We can ensure that the product is well-tested with the help of our expertise, experts, and artificial intelligence technology. TopChoice.co.uk requires consistent care for the products we review, ensuring that our assessments are always accurate and up to date.

Features

Our team of experts analyzes key attributes, capabilities, significance, and many more depending on the type of product to determine its effectiveness.
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Consumer Reviews

We ensure an evaluation of the ratings using references all over the internet for each product. With the help of our AI technology and professional review teams, we give weight to the worth of individual user experiences.
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Popularity

Popularity is an important criterion in choosing a product. Several factors contribute to the popularity of the products on our site, including prestige, relevance, reputation, news, and more.
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Value for money

TopChoice.co.uk compares product attributes to price, examines tech specs, ratings and reviews, and more.

When compared to other criteria, does the pricing seem reasonable? In order to provide genuine value for money, our team must answer that question with advanced calculations.