Best Warning Alarms Deals Online in the UK (24 Deals Found)

Last Updated - 29/10/2026 Sort By:

Best Choice
Taikuwu

New
Taikuwu 12V Sound Light Alarm Flashing Light 110dB High-Decibel Adjustable Alarm Horn Public Places Emergency Evacuation
High - Decibel and Adjustable Volume：Boasts an impressive 110dB sound output, ensuring it can be clearly heard in large

£10.99
Aivane

New
Freezer Door Alarm with 15s Delay, White 1 Pack
Adjustable Volume Mode (Activated by long press of SET button): This refrigerator door alarms when opened supports freel

£8.69
New
Solar Powered Car Security Warning LED Light Fake Alarm Anti Theft Indicator
I6.45c7HUCJHUCJLY" style="box-sizing: border-box; -webkit-tap-highlight-color: transparent; outline: 0px; margin: 0px; p

£2.99
Best Value
OOONO

New
OOONO Co-Driver NO1 LED Traffic Alarm – Real-Time Speed Control & Road Hazard Warning Device, Automatic Activation via B
COMPATIBILITY - To download and use the OOONO app, your smartphone must meet the following requirements: iOS 18.1 or lat

£29.99 £31.49
New
LED Solar Car Dummy Alarm Anti-Theft flashing warning Light Security System
(🚨Dual-Color Flashing Security (Blue + Red).

£2.56
Tek Automotive

New
Tek Automotive Twin Pack Monitored Alarm Sticker – 12.5x9cm Security Warning for Homes & Businesses – Gloss Permanent Vi
Enhanced Security Warning – Clearly informs intruders that a monitored alarm system is installed, deterring break-ins an

£5.99
Gobrecht & Ulrich

New
5 x Alarm System Stickers - Yellow - Security Alarm Warning Sign - for Doors Windows Cars - Weatherproof (7.4 x 5.2 cm)
For your personal security: Show potential intruders that you have an alarm system that protects your property

£3.99
New
Solar Power Car LED Fake Dummy Alarm Warning Security Anti Theft Flashing Light
Bright flashing LED lights mimic the lights used in expensive vehicle alarm systems, making it easier for thieves to fin

£2.77
23% Off
Taikuwu

New
Taikuwu 12V Wired Security Siren with 120dB Alarm & Red LED Strobe Light – Outdoor/Indoor Alarm System for Homes, Garage
1️⃣ Dual Alert System Combines 120dB piercing alarm with synchronised red LED strobe lights. Creates visual/audible dete

£7.29 £9.49
New
Amber Valley Developments 12–24V Left Turn Pedestrian Warning Alarm – New / Unus
Left-turn pedestrian warning alarm.

£100.00
WADORN

New
WADORN 10 Sheets Alarm Warning Sign Stickers, Alarm System Sign Decals Waterproof Self-Adhesive Vinyl Decal Security War
Security Alarm Warning Sign Stickers: our warning informative sign label decals are specifically designed to remind that

£6.69
CPVAN

New
CPVAN Indoor Motion Sensor Alarm with Siren, Wireless Infrared DIY PIR Motion Detector Burglar Alarm System, Battery Ope
CPVAN BRAND YOU CAN TRUST - The team at CPVAN SECURITY has dedicated more than 10 years and thousands of hours making th

£24.99
New
110dB Wireless Vibration Anti-Theft Alarm Remote Bike Motorbike Door Window
Arm key: Press it, once triggered, alarm will bell 110db voice.

£8.94
JASOLYI

New
8pcs Security Stickers, Waterproof Warning Security Stickers Monitored Alarm System Self Adhesive Warning Safety Decals,
【Package Includes】8pcs Self-Adhesive Security Stickers, which are conveniently sized and ready for immediate application

£5.05
New
Commercial vehicle BACKCHAT Alarm 1334A BRIGADE left turn warning
The Commercial Vehicle BACKCHAT Alarm 1334A BRIGADE left turn warning is a high-quality safety accessory made in the Uni

£65.00
10% Off
Vantamo

New
Vantamo Personal Alarms for Women with Strobe LED Light, Extra Loud 130dB Self Defense Keychain with 2 Dynamics, Unique
Vantamo personal alarm offers powerful protection in critical moments. Equipped with a low battery indicator, this safet

£17.99 £19.99
New
Brigade Reversing and Warning Alarm SA-BBS-107 12-24V Brand New
brand new in boxes 4 available no longer needed

£57.90
New
LED Warning Light Alarm Rotating Flash Light Signal Warning Lamp 12V 24V 220V
It is also widely used in warehouse,factories, EMT, utility vehicles,crane and boom operators.

£18.97
New
Automatic Gate & Barrier Pedestrian Voice Warning Alarm Sounder 12V 24V
Pedestrian and Driver Warning for Automated Gates and Barriers.

£99.50
New
12V 100 dB WARNING BUZZER for TRAILERS / INDICATORS / DOOR ALARM & MORE USES
These Warning Buzzers are ideal for all Wiring jobs where a warning buzzer is needed, for example:-.

£5.24
New
Solar-Powered Car LED Fake Alarm Light – Anti-Theft Security Flash Warning
Indestructible Dog Chew Bone Toy, Durable Stick for Aggressive Chewers.

£13.38
New
115dB Loud Wireless Warning Alarm Full Kit Home Anti Intruder Protection System
115dB Sound Alarm.

£34.99
New
Electric Siren Industrial Air Raid Horn Loud Sound Warning Alarm Siren 400W
Type:Air Raid Siren.

£56.40
New
Co-Driver NO1 LED Traffic Alarm – Real-Time Speed Control & Road Hazard Warning
CO-DRIVER NO1 provides early warnings for speed cams, traffic jams, accidents, and stranded vehicles using audio and sub

£36.08

24 Warning Alarms deals are available from: Amazon, eBay stores, starting from £2.56.
The biggest discount we found is 23% on Taikuwu 12V Wired Security Siren with 120dB Alarm & Red LED Strobe Light – Outdoor/Indoor Alarm System for Homes, Garages & Commercial Buildings at Amazon.
The lowest price we found is £2.56 while the highest is £100.00.
Prices for the best Warning Alarms deals average at £26.10.
Last updated on October 29, 2026.
We scanned these quality online stores and more to deliver you with the best offers online available for Warning Alarms.