Best Alarm Systems Deals Online in the UK (25 Deals Found)

Last Updated - 30/01/2026 Sort By:

Best Choice
X-Sense

New
X-Sense Smart Home Security Systems, Wireless alarm systems, Works with Alexa, Supports Mobile App Alerts, Includes 1 Ba
Wireless Security Kit: AS05 home security system includes 2 door sensors, 1 motion sensor, 1 keypad, and 1 base station;

£69.99
X-Sense

New
X-Sense Smart Home Security Systems, Wireless alarm systems, Works with Alexa, Supports Mobile App Alerts, Includes 1 Ba
Wireless Security Kit: AS08 home security system includes 4 door sensors, 2 motion sensors, 1 keypad, and 1 base station

£99.99
New
4G WiFi Wireless Home Alarm System For Complete Home Security Control
1 Wired Siren. Infrared Sensor Detector Battery: Use 2 AAA batteries ( include). WiFi Standard: IEEE8021b/g/n wireless s

£43.08
Best Value
Ring

New
Ring Alarm Pack - XL with Alarm Outdoor Siren by Amazon | Smart home alarm security system with optional Assisted Monito
This Alarm Pack is ideal for homes with 3 bedrooms or more.

£339.99 £449.91
New
Yale HSA Essentials 5 Piece White Wireless Alarm Kit - YES-ALARMKIT - BRAND NEW
Condition: Item is new and unused.

£99.95
11% Off
Yale

New
Yale IA-320 Sync Smart Home Alarm 6 piece kit. Includes Sync Alarm Hub, External Siren, 1x Door/Window Contacts, 2x PIR
Wire free for a quick and easy installation

£240.20 £269.99
Yale

Used
Yale IA-320 Sync Smart Home Alarm 6 piece kit. Includes Sync Alarm Hub, External Siren, 1x Door/Window Contacts, 2x PIR
Wire free for a quick and easy installation

£194.85
New
SENTRY PRO 4G GSM Wireless WiFi Home Security House Alarm System Mains & CCTV
The Sentry Pro alarm solution uses the latest design of components with outstanding functions and features. It is an opt

£200.00
12% Off
Yale

New
Yale HSA Essentials Alarm Kit, Battery Powered, 5 Piece Kit, Self Monitored, No Contract, Wireless, PIR Movement Sensors
EASY TO SET UP: Contains everything your need to get your alarm set-up in no time at all, including fixtures, fittings a

£106.02 £119.99
New
Pyronix DIGI-WIFI Wireless Network Module
The Pyronix DIGI-WIFI Wireless Network Module is a home automation module designed by Pyronix. This module operates on a

£29.99
Yale

Used
Yale HSA Essentials Alarm Kit, Battery Powered, 5 Piece Kit, Self Monitored, No Contract, Wireless, PIR Movement Sensors
EASY TO SET UP: Contains everything your need to get your alarm set-up in no time at all, including fixtures, fittings a

£83.13
25% Off
eufy Security

New
eufy Security 5-Piece Home Alarm Kit, Home Security System, Keypad, Motion Sensor, 2 Entry Sensors, Home Alarm System, C
Easy installation: ready to use in just a few minutes. Simply attach the input sensors to doors or windows and attach th

£119.00 £159.00
New
Van security alarm system - 4 Entry point - Wireless remote - 113db siren - Led
Proactive van security you can install yourself. Vanolert Lite is a battery-powered alarm designed to deter any entry at

£69.25
38% Off
XNH

New
XNH 5-Piece Kit Wireless Home Security Systems, 4G/WiFi + GSM Auto-Dial Alarm System, App & Voice Control,No Monthly Fee
【🔋 Dual Power Supply PIR】The 2025 latest infrared detector for Home Security Systems features a dual power supply (Type

£47.49 £75.99
New
Smart GSM WiFi Home Alarm System Wireless Residential Security Control
This residential home alarm system is designed to provide basic wireless security control for household use. The system

£31.49
XUK

New
XUK Home Security Systems, No Monthly Fee, 4.3" Touchscreen Wireless Alarm System with Motion Sensor, Door/Window Sensor
Dual Protection with WiFi + 4G – This home security system ensures a stable and reliable connection via WiFi and 4G, wit

£159.99 £169.99
New
NEW Challenger wired burglar alarm system bell box, siren, LED strobe, battery
Loud siren. LED strobe flasher. Comfort LED.

£21.49
New
4G Wireless Intruder Alarm Kit, Wireless Burglar Tuya Alarm Kit, JANUARY OFFER
4G Wireless Burglar / Intruder Alarm Kit, Wifi GSM Tuya Alarm System. If you have an alarm that operates on 2G and 3G it

£55.00
New
Smart GSM WiFi Home Alarm System Residential Wireless Security Control
This residential smart alarm system is designed to support wireless home security through GSM and WiFi connectivity. It

£31.99
New
Honeywell AG6 siren

£27.41
New
Ring Alarm 5 Piece Kit Wireless Home Security System 2nd Gen RRP £219.99 New
1x Alarm Motion Detector. 1x Alarm Keypad. 1x Alarm Range Extender. OUR LOWEST PRICE EVER! However the product itself ha

£129.99
New
Wireless IP65 Waterproof Driveway Alarm System PIR Motion Sensor for Outdoor Hom
Driveway Alarm- 1/2 Mile Long Range Wireless Driveway Alarm Outdoor Weather Resistant Motion Sensor & Detector. It is a

£33.99
New
Response Alarms External Solar Wireless Siren & Strobe Instruction Manual Boxed
This white siren unit is compatible with other alarm systems and operates on a wireless system, ensuring easy installati

£39.99
New
Htzsafe Owl Wireless Driveway Alarm Mailbox Alert 1 Receiver + 1 Sensor UKplug
Fully expandable system, up to 32 HTZSAFE sensors can be added to the receiver and 1 sensor can be added to unlimited re

£35.99
New
Channel Safety Systems HARK Disabled Toilet Alarm Kit with Pull Cord
Qty x 1 HARK Disabled Toilet Alarm Kit. Type: Disabled Toilet Alarm Kit. Viewing on a phone?. Disabled Stickers Included

£32.03

25 Alarm Systems deals are available from: Amazon, eBay stores, starting from £21.49.
The biggest discount we found is 38% on XNH 5-Piece Kit Wireless Home Security Systems, 4G/WiFi + GSM Auto-Dial Alarm System, App & Voice Control,No Monthly Fees,Compatible With Alexa & Google Assistant, Easy Installation For Home at Amazon.
The lowest price we found is £21.49 while the highest is £339.99.
Prices for the best Alarm Systems deals average at £93.69.
Last updated on January 30, 2026.
We scanned these quality online stores and more to deliver you with the best offers online available for Alarm Systems.