7 Best Window Alarm [UK] (2025)

2025 Expert Picks

Last Updated: June 2025

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Last Updated: June 2025

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Best Window Alarm

Premium Pick

Window Alarm 5 Pack, 125DB Loud Glass Break Sensors, Detects Glassbreak & Vibration, with Adjustable Sensitivity, Fit for Any Window for Indoor Home Office Security

Noopel

9.7

Window Alarm 5 Pack, 125DB Loud Glass Break Sensors, Detects Glassbreak & Vibration, with Adjustable Sensitivity, Fit for Any Window for Indoor Home Office Security

Color: White

Dimensions: 0.39 x 2.87 x 2.87 inches

Weight: 0.00

Size: 7.3cm x 7.3cm x 1cm

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Picked by 397 people today

TECKNET Door Alarm Sensor 2 Packs With Remote Control, Window Alarms for Security, 4 Modes, Adjustable Volume, Wireless Magnetic Door Sensor Burglar Alarm Systems for Your Home Security Systems

TECKNET

Available in 2 Styles

9.5

TECKNET Door Alarm Sensor 2 Packs With Remote Control, Window Alarms for Security, 4 Modes, Adjustable Volume, Wireless Magnetic Door Sensor Burglar Alarm Systems for Your Home Security Systems

Dimensions: 0.79 x 6.69 x 1.57 inches

LACORAMO

Available in 1 Unknown

9.5

LACORAMO Door Alarm Sensor - Premium Quality - Wireless Magnetically Triggered Window Alarm, 130 db Siren Security Entry Burglar Alert with 2 Remote Controls for Protecting Kids Safety, Home, Shop

Color: White

Dimensions: 0.39 x 3.54 x 1.69 inches

Weight: 0.20 pounds

Unit Count: 1

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NICE Home

9.2

Personal Security Window & Door Alarm Bell | Wireless Sensor Door Window Burglar Alarm | Pack of 10

Color: 10 Pcs

Dimensions: 0.70 x 1.20 x 3.60 inches

Weight: 0.00

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Defender

9.0

Defender Ultra Slim Vibration Alarm 2 Pack - Window Alert Alarm Sensor Smash Glass Siren 130dB - Police Accredited

Color: Black/Silver

Dimensions: 2.44 x 0.39 x 2.01 inches

Weight: 0.00

Unit Count: 2

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Fixget

8.8

Fixget Pack of 8 Magnetic Door and Window Security Entry Alarm System WirelessMini Alarms Burglar Intruder Entry Warning Sensors White (Battery Included)

Dimensions: 2.17 x 9.45 x 7.87 inches

Weight: 308.00 grams

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TECKNET

Available in 3 Styles

8.6

TECKNET Door Alarm Sensor, Window Alarms Sensors, 2-in-1 Alarm & Chime, 3-level Volume Control, Door Sensor for Home Security, Wireless Burglar Alarms for House, Shop, Office, Garage (3 PCS)

Color: White

Dimensions: 1.50 x 1.20 x 0.40 inches

Weight: 0.00

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Our Top Choice

Best Window Alarm

Premium Pick

Noopel

9.7

Window Alarm 5 Pack, 125DB Loud Glass Break Sensors, Detects Glassbreak & Vibration, with Adjustable Sensitivity, Fit for Any Window for Indoor Home Office Security

Color: White

Dimensions: 0.39 x 2.87 x 2.87 inches

Weight: 0.00

Size: 7.3cm x 7.3cm x 1cm

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Expert Reviews

At 7-Best, we meticulously analyze and compare products, partnering with top retailers. Our aim is to deliver unbiased, comprehensive reviews to assist your informed decisions.

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Using advanced data analysis, we pinpoint top-rated products based on real purchase trends.

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We leverage expert analysis and advanced technology to evaluate thousands of products. Our unbiased reviews are designed to save you time and ensure you find the best options with confidence.

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2025 Expert Picks

Finding the perfect product can be challenging. That’s why our team invests countless hours in research, breaking down key insights into clear, side-by-side comparisons. Our top pick is based on what matters most to our readers, the most popular products in each category, and a data-driven assessment of all available options. We aim to provide you with all the details you need to make the best choice—quickly and confidently.

Unit Count

Compare Features

Unit Count	Premium Pick Window Alarm 5 Pack, 125DB Loud Glass Break Sensors, Detects Glassbreak & Vibration, with Adjustable Sensitivity, Fit for Any Window for Indoor Home Office Security Noopel On Amazon	TECKNET Door Alarm Sensor 2 Packs With Remote Control, Window Alarms for Security, 4 Modes, Adjustable Volume, Wireless Magnetic Door Sensor Burglar Alarm Systems for Your Home Security Systems TECKNET On Amazon	Popular LACORAMO Door Alarm Sensor - Premium Quality - Wireless Magnetically Triggered Window Alarm, 130 db Siren Security Entry Burglar Alert with 2 Remote Controls for Protecting Kids Safety, Home, Shop LACORAMO On Amazon	Personal Security Window & Door Alarm Bell \| Wireless Sensor Door Window Burglar Alarm \| Pack of 10 NICE Home On Amazon	Defender Ultra Slim Vibration Alarm 2 Pack - Window Alert Alarm Sensor Smash Glass Siren 130dB - Police Accredited Defender On Amazon	Fixget Pack of 8 Magnetic Door and Window Security Entry Alarm System WirelessMini Alarms Burglar Intruder Entry Warning Sensors White (Battery Included) Fixget On Amazon	TECKNET Door Alarm Sensor, Window Alarms Sensors, 2-in-1 Alarm & Chime, 3-level Volume Control, Door Sensor for Home Security, Wireless Burglar Alarms for House, Shop, Office, Garage (3 PCS) TECKNET On Amazon
Deal
Deal	-	-	-	Save 5%	-	-	-
Color	White	-	White	10 Pcs	Black/Silver	-	White
Color	White	-	White	10 Pcs	Black/Silver	-	White
Dimensions	0.39 x 2.87 x 2.87 inches	0.79 x 6.69 x 1.57 inches	0.39 x 3.54 x 1.69 inches	0.70 x 1.20 x 3.60 inches	2.44 x 0.39 x 2.01 inches	2.17 x 9.45 x 7.87 inches	1.50 x 1.20 x 0.40 inches
Dimensions	0.39 x 2.87 x 2.87 inches	0.79 x 6.69 x 1.57 inches	0.39 x 3.54 x 1.69 inches	0.70 x 1.20 x 3.60 inches	2.44 x 0.39 x 2.01 inches	2.17 x 9.45 x 7.87 inches	1.50 x 1.20 x 0.40 inches
Weight	0.00	0.00	0.20 pounds	0.00	0.00	308.00 grams	0.00
Weight	0.00	0.00	0.20 pounds	0.00	0.00	308.00 grams	0.00
Size	7.3cm x 7.3cm x 1cm	-	-	-	-	-	-
Size	7.3cm x 7.3cm x 1cm	-	-	-	-	-	-
Unit Count	-	2	1	-	2	-	-
Unit Count	-	2	1	-	2	-	-

Trusting our TOP Pick

+1000

Hours of research

+1 Million

Purchases analyzed

+5000

Brands Compared

+100

Categories Covered

We leverage expert analysis and advanced technology to evaluate thousands of products. Our unbiased reviews are designed to save you time and ensure you find the best options with confidence.