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

Last Updated - 27/03/2026 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;

£50.39 £69.99
Best Value
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

£201.94 £269.99
New
Wireless GSM Alarm Burglar Alarms Home Best Security System Autodial DIY Install
Siren output: <500mA. Support external wireless siren. Wireless strobe siren. 1 x Wireless Outdoor Siren. Main interface

£89.99
15% Off
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

£84.99 £99.99
New
Vanguardian alarm bundle VG-1D-1SA VAN ALARM TRADESPERSON
4 powerful 110db alarm speakers.

£180.00
XNY

New
XNY WiFi Home Alarm Systems, Wireless 4G Alarm System for Home Security with APP Alert, 24-Piece-Kit, Motion Detector, D
[ Easy to Install ]: Easy To Install panel with wireless sensors that can be integrated in short time with automated fas

£94.99 £99.99
16% Off
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.

£376.94 £449.91
New
KERUI Wireless Security Burglar Door Alarm System Garage PIR Motion Sensor Kit
1 Wireless PIR Motion Detector with 9V Battery. The host supports up to 30pcs wireless detectors, 8pcs remote key fobs,

£33.11
Swokely

New
Swokely 433MHz Wireless WIFI + GSM Auto-dial Alarm Security System LCD Display Door Sensor Remote Control Compatible wit
Advanced TFT LCD Screen Display and Voice Prompt : Tuya Standard alarm security system features a high-quality 2.4-inch

£59.99
New
Ring 7 Pieces Wireless Home Security Alarm kit, (2nd Gen) - Medium , RRP 269.97
The Ring 7 Pieces Wireless Home Security Alarm kit (2nd Gen) in Medium size is a complete home security system that incl

£131.71
16% 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

£100.38 £119.99
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

£85.91
New
Wireless PIR Motion Sensor Alarm with 2 Remote Control Shed Home Garage Security
Built in PIR motion sensor. The motion detector power by 4 AA batteries (not included). When the alarm is triggered,it w

£6.99
LWOHSI

New
LWOHSI Wireless Alarm System,Door Alarm System,24-Piece Kits with Door/Window Sensors and Motion Detector,Tuya APP Alert
【QUICK & EASY INSTALLATION & REMOVAL & NO MONTHLY FEES】No monthly fees, installation costs or contracts required. Purcha

£129.00 £139.00
New
4G Tuya WiFi GSM GPRS 4.3" Wireless Alarm System, Home Burglar Alarm.
4G Tuya WiFi GSM GPRS 4.3" Wireless Burglar System. 4G GSM communicator. This is the latest version of 107T alarm that w

£65.00
40% Off
XNH

New
XNH 13 PCS Wireless Home Security Systems– No Monthly Fee, App & Smart Voice Control (Alexa & Google), DIY Installation,
【📱Remote Control & Real-Time Alerts】This wireless house alarm system connects seamlessly to your 2.4GHz WiFi network an

£47.87 £79.99
New
Yale Wireless Shed And Garage Alarm Wall Mounted White SAA5015 EASILY SECURE
Yale Wireless Shed And Garage Alarm - White - SAA5015. It is simple to install, can be wall-mounted or be freestanding.

£16.00
New
Intruder Alarm For Garage, Shed, Outbuilding, Wired infrared, Remote Controlled.
Anyone passing between the beams will trigger them and send a signal back to the alarm siren. Wired Burglar / Intruder A

£55.00
New
Wireless Driveway Alarm Alert System Security Garage Intruder PIR Motion Sensor
There are two parts to this driveway security system. - Wireless and weatherproof PIR motion sensor. - Passive Infrared

£11.66
New
KERUI Wireless Security Burglar Door Alarm System PIR for Garage Shed House Shop
1 Wireless PIR Motion Detector with 9V Battery. The host supports up to 30pcs wireless detectors, 8pcs remote key fobs,

£32.63
New
Wireless Driveway Alarm Alert System Security Garage Intruder PIR Motion Sensor

£10.99
New
2/1x Security Keypad Loud Alarm Wireless Door Alarm Garage Caravan Burglar Home
Model: Security Keypad Door Alarm System. 2PcsOR 1Pcs Security Keypad Door Alarm System as per your order. Connectivity:

£16.99
Used
Omnicron 7000 Alarm System Box 2x Pir 2x Mag Contacts Anti Burglar Home Office
A1 Security Omnicron 7000 intruder alarm system. Model: Omnicron 7000. Ideal for collectors, spare parts, or repair proj

£39.99
New
Carbon Monoxide Alarm LCD Display 10 Year CO Detector CE Certified GMEC
• Up to 10 years operational lifespan . • Clear power, fault & alarm indicators. • Loud alarm alert. 📟 Clear Digital LC

£16.99
New
Smoke Alarm & Carbon Monoxide Alarm Detector | 10-YearlLife Battery | GMEC UK
Dual Protection : Get both smoke and carbon monoxide detection in one device. Test/Silence Button : Easily test or silen

£36.57

25 Alarm Systems deals are available from: Amazon, eBay stores, starting from £6.99.
The biggest discount we found is 40% on XNH 13 PCS Wireless Home Security Systems– No Monthly Fee, App & Smart Voice Control (Alexa & Google), DIY Installation, Door/Window & Motion Sensors, Compatible with Smart Life & Tuya Apps at Amazon.
The lowest price we found is £6.99 while the highest is £376.94.
Prices for the best Alarm Systems deals average at £79.04.
Last updated on March 27, 2026.
We scanned these quality online stores and more to deliver you with the best offers online available for Alarm Systems.