Burglar alarms

461 products

Wireless door and window alarm system with a powerful 90 dB siren. 6-pack for homes, cars, sheds, caravans, and campers. (1/5)

Wireless door and window alarm system with a powerful 90 dB siren. 6-pack for homes, cars, sheds, caravans, and campers. (2/5)

Wireless door and window alarm system with a powerful 90 dB siren. 6-pack for homes, cars, sheds, caravans, and campers. (3/5)

Wireless door and window alarm system with a powerful 90 dB siren. 6-pack for homes, cars, sheds, caravans, and campers. (4/5)

Wireless door and window alarm system with a powerful 90 dB siren. 6-pack for homes, cars, sheds, caravans, and campers.

~~£51.84~~

Free shipping

Door and Window Alarm, Door/Window Sensor, 120dB Touch Sensor Door Handle Anti-Theft Alarm Vibration Window Burglary Alert Home Security (1/4)

Door and Window Alarm, Door/Window Sensor, 120dB Touch Sensor Door Handle Anti-Theft Alarm Vibration Window Burglary Alert Home Security (2/4)

Door and Window Alarm, Door/Window Sensor, 120dB Touch Sensor Door Handle Anti-Theft Alarm Vibration Window Burglary Alert Home Security

~~£36.47~~

Free shipping

6 Sets Anti-theft Sensor Wireless Magnetic Door Window Security Alarm (1/3)

6 Sets Anti-theft Sensor Wireless Magnetic Door Window Security Alarm

~~£38.98~~

Free shipping

Freezer Door Alarm with Timer 3/15/30/60 Refrigerator/Pool Door Alarms for Child Safety Home Security Window Alarm Door Bell (1/5)

Freezer Door Alarm with Timer 3/15/30/60 Refrigerator/Pool Door Alarms for Child Safety Home Security Window Alarm Door Bell (2/5)

Freezer Door Alarm with Timer 3/15/30/60 Refrigerator/Pool Door Alarms for Child Safety Home Security Window Alarm Door Bell (3/5)

Freezer Door Alarm with Timer 3/15/30/60 Refrigerator/Pool Door Alarms for Child Safety Home Security Window Alarm Door Bell

~~£39.60~~

Free shipping

WiFi Door Sensor Smart Window Contact Sensor Wireless Alarm Compatible with Alexa and Google Assistant No Hub Needed 1 Pack (1/5)

WiFi Door Sensor Smart Window Contact Sensor Wireless Alarm Compatible with Alexa and Google Assistant No Hub Needed 1 Pack (2/5)

WiFi Door Sensor Smart Window Contact Sensor Wireless Alarm Compatible with Alexa and Google Assistant No Hub Needed 1 Pack (3/5)

WiFi Door Sensor Smart Window Contact Sensor Wireless Alarm Compatible with Alexa and Google Assistant No Hub Needed 1 Pack

~~£39.60~~

Free shipping

2 Pack Window Door Alarm, 110dB Wireless Anti-Theft Magnetic Sensor for Apartment Garage Safes DIY Installation (1/5)

2 Pack Window Door Alarm, 110dB Wireless Anti-Theft Magnetic Sensor for Apartment Garage Safes DIY Installation (2/5)

2 Pack Window Door Alarm, 110dB Wireless Anti-Theft Magnetic Sensor for Apartment Garage Safes DIY Installation (3/5)

2 Pack Window Door Alarm, 110dB Wireless Anti-Theft Magnetic Sensor for Apartment Garage Safes DIY Installation

~~£37.90~~

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433 MHz Wireless Magnetic Door Contact Sensor Detector Switch for Home Garage Alarm Security (1/5)

433 MHz Wireless Magnetic Door Contact Sensor Detector Switch for Home Garage Alarm Security (2/5)

433 MHz Wireless Magnetic Door Contact Sensor Detector Switch for Home Garage Alarm Security (3/5)

433 MHz Wireless Magnetic Door Contact Sensor Detector Switch for Home Garage Alarm Security

~~£30.93~~

Free shipping

Pack of 10 heavy-duty magnetic safety switches for alarms, reed switches, 300 mA, no external power supply required, for home or office alarm systems (1/5)

Pack of 10 heavy-duty magnetic safety switches for alarms, reed switches, 300 mA, no external power supply required, for home or office alarm systems

~~£41.50~~

Free shipping

Door Alarm, Door Opening Detector with Powerful 130dB Siren, Wireless Magnetic Door and Window Alarm for Doors, Windows and Cabinets, Home, Office (1/5)

Door Alarm, Door Opening Detector with Powerful 130dB Siren, Wireless Magnetic Door and Window Alarm for Doors, Windows and Cabinets, Home, Office

~~£39.91~~

Free shipping

Inductive Vehicle Loop Detector for Car Parking Barrier Loop Detectors/Vehicle Access Loop Sensor (1/5)

Inductive Vehicle Loop Detector for Car Parking Barrier Loop Detectors/Vehicle Access Loop Sensor (2/5)

Inductive Vehicle Loop Detector for Car Parking Barrier Loop Detectors/Vehicle Access Loop Sensor (3/5)

Inductive Vehicle Loop Detector for Car Parking Barrier Loop Detectors/Vehicle Access Loop Sensor

~~£40.99~~

Free shipping

WiFi Door Sensor Alarm: Smart Door Window Sensor with 90dB Alarm and App Notification, Wireless Door Open Contact Sensor for Burglar Alarm (1/5)

WiFi Door Sensor Alarm: Smart Door Window Sensor with 90dB Alarm and App Notification, Wireless Door Open Contact Sensor for Burglar Alarm (2/5)

WiFi Door Sensor Alarm: Smart Door Window Sensor with 90dB Alarm and App Notification, Wireless Door Open Contact Sensor for Burglar Alarm (3/5)

WiFi Door Sensor Alarm: Smart Door Window Sensor with 90dB Alarm and App Notification, Wireless Door Open Contact Sensor for Burglar Alarm

~~£41.99~~

Free shipping

Allarme perimetrale, dispositivo di allarme cablato calibro 12 con copertura completa a 360 gradi per la sicurezza di campeggi e proprietà (1/5)

Allarme perimetrale, dispositivo di allarme cablato calibro 12 con copertura completa a 360 gradi per la sicurezza di campeggi e proprietà (2/5)

Allarme perimetrale, dispositivo di allarme cablato calibro 12 con copertura completa a 360 gradi per la sicurezza di campeggi e proprietà (3/5)

Allarme perimetrale, dispositivo di allarme cablato calibro 12 con copertura completa a 360 gradi per la sicurezza di campeggi e proprietà

~~£41.99~~

Free shipping

2-Pack Freezer Door Alarms, Window Security Alarm, Wireless Refrigerator Alarm (1/5)

2-Pack Freezer Door Alarms, Window Security Alarm, Wireless Refrigerator Alarm (2/5)

2-Pack Freezer Door Alarms, Window Security Alarm, Wireless Refrigerator Alarm (3/5)

2-Pack Freezer Door Alarms, Window Security Alarm, Wireless Refrigerator Alarm

~~£41.14~~

Free shipping

Pack of 8 Mini Wireless Home Door Alarms, Anti-Intrusion Home Alarm System, Wireless Security Sensor (1/5)

Pack of 8 Mini Wireless Home Door Alarms, Anti-Intrusion Home Alarm System, Wireless Security Sensor (2/5)

Pack of 8 Mini Wireless Home Door Alarms, Anti-Intrusion Home Alarm System, Wireless Security Sensor (3/5)

Pack of 8 Mini Wireless Home Door Alarms, Anti-Intrusion Home Alarm System, Wireless Security Sensor

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Personal security alarm for doors and windows, ideal for families with children. Triggers when the door is opened. Noise level: 120 decibels. White. Dimensions 9 x 5.1 x 9 cm (1/5)

Personal security alarm for doors and windows, ideal for families with children. Triggers when the door is opened. Noise level: 120 decibels. White. Dimensions 9 x 5.1 x 9 cm

~~£33.95~~

Free shipping

Door and window alarm, ensures child safety at home, with remote control, magnetic door/garage access sensor alarm (1/4)

Door and window alarm, ensures child safety at home, with remote control, magnetic door/garage access sensor alarm (2/4)

Door and window alarm, ensures child safety at home, with remote control, magnetic door/garage access sensor alarm

~~£70.38~~

Free shipping

Secure & Alert burglar-proof security bar (1/4)

Secure & Alert burglar-proof security bar (2/4)

Secure & Alert burglar-proof security bar

~~£64.20~~

Free shipping

Home alarm, Refrigerator and freezer alarm, Door left open, Reminders 60 seconds and more (1/4)

Home alarm, Refrigerator and freezer alarm, Door left open, Reminders 60 seconds and more (2/4)

Home alarm, Refrigerator and freezer alarm, Door left open, Reminders 60 seconds and more

~~£35.31~~

Free shipping

Door and Window Alarm - Set of 4x Wireless Anti-Intrusion Alarm - Home Security Against Burglary - Magnetic Operation - 100 dB (1/4)

Door and Window Alarm - Set of 4x Wireless Anti-Intrusion Alarm - Home Security Against Burglary - Magnetic Operation - 100 dB (2/4)

Door and Window Alarm - Set of 4x Wireless Anti-Intrusion Alarm - Home Security Against Burglary - Magnetic Operation - 100 dB

~~£37.98~~

Free shipping

Wireless Door and Window Alarm Set of 4 Magnetic Alarms, 100 dB Volume, Tool-Free Installation, Home Security, Anti-Intrusion (1/4)

Wireless Door and Window Alarm Set of 4 Magnetic Alarms, 100 dB Volume, Tool-Free Installation, Home Security, Anti-Intrusion (2/4)

Wireless Door and Window Alarm Set of 4 Magnetic Alarms, 100 dB Volume, Tool-Free Installation, Home Security, Anti-Intrusion

~~£44.28~~

Free shipping

Door Alarm, Door Opening Detector with 130dB Loud Alarm, Suitable for Doors, Windows and Cabinets, Home, Office (1/5)

Door Alarm, Door Opening Detector with 130dB Loud Alarm, Suitable for Doors, Windows and Cabinets, Home, Office (2/5)

Door Alarm, Door Opening Detector with 130dB Loud Alarm, Suitable for Doors, Windows and Cabinets, Home, Office (3/5)

Door Alarm, Door Opening Detector with 130dB Loud Alarm, Suitable for Doors, Windows and Cabinets, Home, Office

~~£42.44~~

Free shipping

2 Pack Freezer Door Alarm, Window Security Alarm, Wireless Fridge Alarm (1/5)

2 Pack Freezer Door Alarm, Window Security Alarm, Wireless Fridge Alarm (2/5)

2 Pack Freezer Door Alarm, Window Security Alarm, Wireless Fridge Alarm (3/5)

2 Pack Freezer Door Alarm, Window Security Alarm, Wireless Fridge Alarm

~~£36.12~~

Free shipping

PIC MS-324R/843 Reed contact sensor

Door and Window Alarm, 130 dB Wireless Door and Window Detectors with Remote Control, Anti-Intrusion Anti-Theft Magnetic Sensor for Home and Child Security System (1/5)

Door and Window Alarm, 130 dB Wireless Door and Window Detectors with Remote Control, Anti-Intrusion Anti-Theft Magnetic Sensor for Home and Child Security System

~~£44.64~~

Free shipping

Door and Window Alarm, 2 Remote Controls, 130dB Siren, Adjustable Volume, 5 Function Modes Alarm, Magnetic Security Sensor, Wireless Home Alarm for Home, Shop, Children (1/4)

Door and Window Alarm, 2 Remote Controls, 130dB Siren, Adjustable Volume, 5 Function Modes Alarm, Magnetic Security Sensor, Wireless Home Alarm for Home, Shop, Children

~~£39.99~~

Free shipping

Door and Window Alarm, 2 Remote Controls, 120dB Siren, Adjustable Volume, Magnetic Security Sensor, Wireless Home Alarm for Home, Shop, Children (1/4)

Door and Window Alarm, 2 Remote Controls, 120dB Siren, Adjustable Volume, Magnetic Security Sensor, Wireless Home Alarm for Home, Shop, Children (2/4)

Door and Window Alarm, 2 Remote Controls, 120dB Siren, Adjustable Volume, Magnetic Security Sensor, Wireless Home Alarm for Home, Shop, Children

~~£74.07~~

Free shipping

Portable anti-theft alarm, ideal for home, apartment, hotel and travel. (2 unit) (1/5)

Portable anti-theft alarm, ideal for home, apartment, hotel and travel. (2 unit) (2/5)

Portable anti-theft alarm, ideal for home, apartment, hotel and travel. (2 unit) (3/5)

Portable anti-theft alarm, ideal for home, apartment, hotel and travel. (2 unit)

~~£35.50~~

Free shipping

Portable anti-theft alarm, ideal for home, apartment, hotel and travel. (2 unit)

~~£41.25~~

Free shipping

Jalleria Door and Window Alarm - Set of 4x Wireless Anti-Intrusion Alarm - Home Security Against Burglary - Magnetic Operation - 100 dB (1/4)

Jalleria Door and Window Alarm - Set of 4x Wireless Anti-Intrusion Alarm - Home Security Against Burglary - Magnetic Operation - 100 dB (2/4)

Jalleria Door and Window Alarm - Set of 4x Wireless Anti-Intrusion Alarm - Home Security Against Burglary - Magnetic Operation - 100 dB

~~£48.13~~

Free shipping

Active infrared beam sensor for anti-theft devices such as door openers, access control, and security alarm systems (1/5)

Active infrared beam sensor for anti-theft devices such as door openers, access control, and security alarm systems (2/5)

Active infrared beam sensor for anti-theft devices such as door openers, access control, and security alarm systems (3/5)

Active infrared beam sensor for anti-theft devices such as door openers, access control, and security alarm systems

~~£47.02~~

Free shipping

12V DC Access Control Fail Safe NC Narrow-Type Door Electric Strike for Access Control Power Locks (NC Lock，150mm28mm) (1/3)

12V DC Access Control Fail Safe NC Narrow-Type Door Electric Strike for Access Control Power Locks (NC Lock，150mm28mm)

~~£42.44~~

Free shipping

130dB Wireless Security Alarm – 5 Alarm Modes – 2 Remote Controls – Magnetic Sensor for Doors and Windows – Easy Installation (1/4)

130dB Wireless Security Alarm – 5 Alarm Modes – 2 Remote Controls – Magnetic Sensor for Doors and Windows – Easy Installation (2/4)

130dB Wireless Security Alarm – 5 Alarm Modes – 2 Remote Controls – Magnetic Sensor for Doors and Windows – Easy Installation

Free shipping

High-precision specular switch, long-lasting, durable photoelectric detection for a safe home or factory environment (1/5)

High-precision specular switch, long-lasting, durable photoelectric detection for a safe home or factory environment (2/5)

High-precision specular switch, long-lasting, durable photoelectric detection for a safe home or factory environment (3/5)

High-precision specular switch, long-lasting, durable photoelectric detection for a safe home or factory environment

~~£39.02~~

Free shipping

High-precision specular switch, long-lasting, durable photoelectric detection for a safe home or factory environment

~~£39.02~~

Free shipping

Home alarm, Refrigerator and freezer alarm, Door left open, Reminders 60 seconds and more

~~£34.98~~

Free shipping

Door and Window Alarm - Wireless Anti-Theft System with Powerful 105dB Sound and Bright Light (1 Alarm and 1 Remote Control) (1/4)

Door and Window Alarm - Wireless Anti-Theft System with Powerful 105dB Sound and Bright Light (1 Alarm and 1 Remote Control) (2/4)

Door and Window Alarm - Wireless Anti-Theft System with Powerful 105dB Sound and Bright Light (1 Alarm and 1 Remote Control)

~~£44.36~~

Free shipping

Set of 4 Home Security Door Alarms, Magnetic Window Opening Detector, 110 dB Anti-Theft Alarm Chime for Garage Drawers, Safes (1/5)

Set of 4 Home Security Door Alarms, Magnetic Window Opening Detector, 110 dB Anti-Theft Alarm Chime for Garage Drawers, Safes (2/5)

Set of 4 Home Security Door Alarms, Magnetic Window Opening Detector, 110 dB Anti-Theft Alarm Chime for Garage Drawers, Safes (3/5)

Set of 4 Home Security Door Alarms, Magnetic Window Opening Detector, 110 dB Anti-Theft Alarm Chime for Garage Drawers, Safes (4/5)

Set of 4 Home Security Door Alarms, Magnetic Window Opening Detector, 110 dB Anti-Theft Alarm Chime for Garage Drawers, Safes

~~£54.78~~

Free shipping

Set of 4 Home Security Door Alarms, Magnetic Window Opening Detector, 110 dB Anti-Theft Alarm Chime for Garage Drawers, Safes

~~£54.99~~

Free shipping

Wireless door and window alarm – Magnetic sensor with 2 modes, child lock, white (1/5)

Wireless door and window alarm – Magnetic sensor with 2 modes, child lock, white (2/5)

Wireless door and window alarm – Magnetic sensor with 2 modes, child lock, white (3/5)

Wireless door and window alarm – Magnetic sensor with 2 modes, child lock, white

~~£26.80~~

Trip Alarm Co. Perimeter Defense Gen 3.0 Wired Perimeter Alarm – High Sensitivity, Easy Installation, and Accurate Detection (1/4)

Trip Alarm Co. Perimeter Defense Gen 3.0 Wired Perimeter Alarm – High Sensitivity, Easy Installation, and Accurate Detection (2/4)

Trip Alarm Co. Perimeter Defense Gen 3.0 Wired Perimeter Alarm – High Sensitivity, Easy Installation, and Accurate Detection

~~£23.94~~

Door and Window Alarm, 2 Remote Controls, 130dB Siren, Adjustable Volume, 5 Alarm Modes, Magnetic Security Sensor, Wireless Home Alarm for Home, Shop, Children

Alarm for fridge and freezer, door left open, reminder from 60 seconds (1/4)

Alarm for fridge and freezer, door left open, reminder from 60 seconds (2/4)

Alarm for fridge and freezer, door left open, reminder from 60 seconds

~~£35.12~~

Free shipping

6-piece anti-theft door alarm sensor, wireless window alarm, door and window alarm (1/5)

6-piece anti-theft door alarm sensor, wireless window alarm, door and window alarm (2/5)

6-piece anti-theft door alarm sensor, wireless window alarm, door and window alarm (3/5)

6-piece anti-theft door alarm sensor, wireless window alarm, door and window alarm

Free shipping

WiFi alarm for doors and windows: smart alarm for windows, vibration sensors with 130 dB alarm and alerts via free app, child safety alarm sensor for (1/5)

WiFi alarm for doors and windows: smart alarm for windows, vibration sensors with 130 dB alarm and alerts via free app, child safety alarm sensor for

~~£46.73~~

Free shipping

Door and Window Alarm, 2 Remote Controls, 130dB Siren, Adjustable Volume, 5 Alarm Modes, Magnetic Security Sensor, Wireless Home Alarm for Home, Shop, Children

~~£45.22~~

Free shipping

Door and Window Alarm, Door/Window Sensor, 120dB Touch Sensor Door Handle Anti-theft Alarm Vibration Window Burglar Alert Home Security (1/5)

Door and Window Alarm, Door/Window Sensor, 120dB Touch Sensor Door Handle Anti-theft Alarm Vibration Window Burglar Alert Home Security (2/5)

Door and Window Alarm, Door/Window Sensor, 120dB Touch Sensor Door Handle Anti-theft Alarm Vibration Window Burglar Alert Home Security (3/5)

Door and Window Alarm, Door/Window Sensor, 120dB Touch Sensor Door Handle Anti-theft Alarm Vibration Window Burglar Alert Home Security

Free shipping

Door and Window Alarm - Pack of 4 Wireless Intruder Alarms - Home Security Against Burglary - Magnetic Operation - 90 dB NPTERBL (1/5)

Door and Window Alarm - Pack of 4 Wireless Intruder Alarms - Home Security Against Burglary - Magnetic Operation - 90 dB NPTERBL (2/5)

Door and Window Alarm - Pack of 4 Wireless Intruder Alarms - Home Security Against Burglary - Magnetic Operation - 90 dB NPTERBL (3/5)

Door and Window Alarm - Pack of 4 Wireless Intruder Alarms - Home Security Against Burglary - Magnetic Operation - 90 dB NPTERBL

Free shipping

Door and Window Alarm - Pack of 4 Wireless Intruder Alarms - Home Security Against Burglary - Magnetic Operation - 90 dB (1/3)

Door and Window Alarm - Pack of 4 Wireless Intruder Alarms - Home Security Against Burglary - Magnetic Operation - 90 dB

Free shipping

Door and Window Alarm, 130 dB Wireless Door and Window Detectors with Remote Control, Anti-Intrusion Anti-Theft Magnetic Sensor for Home and Child Security System

Free shipping

Door Alarm, 2 Pack Wireless Door Window Safety Freezer Door Alarm 3/15/30/60 Seconds Adjustable Delay Wireless Door Open Sensor Refrigerator Alarm for Kids Safety Home Shop Security (1/5)

Door Alarm, 2 Pack Wireless Door Window Safety Freezer Door Alarm 3/15/30/60 Seconds Adjustable Delay Wireless Door Open Sensor Refrigerator Alarm for Kids Safety Home Shop Security

Free shipping

Wireless Home Doors Windows Security Entry Alarm System Pack 6 (1/5)

Wireless Home Doors Windows Security Entry Alarm System Pack 6 (2/5)

Wireless Home Doors Windows Security Entry Alarm System Pack 6 (3/5)

Wireless Home Doors Windows Security Entry Alarm System Pack 6

Free shipping

Door Alarm, Door Opening Detector with Powerful 130dB Siren, Wireless Magnetic Door and Window Alarm for Doors, Windows and Cabinets, Home, Office

~~£35.99~~

Free shipping

Door and Window Alarm - Wireless Burglar Alarm with Remote Control, Easy to Install, 105db Very Loud (Includes 2 Alarms and 1 Remote Control) (1/5)

Door and Window Alarm - Wireless Burglar Alarm with Remote Control, Easy to Install, 105db Very Loud (Includes 2 Alarms and 1 Remote Control) (2/5)

Door and Window Alarm - Wireless Burglar Alarm with Remote Control, Easy to Install, 105db Very Loud (Includes 2 Alarms and 1 Remote Control) (3/5)

Door and Window Alarm - Wireless Burglar Alarm with Remote Control, Easy to Install, 105db Very Loud (Includes 2 Alarms and 1 Remote Control)

~~£48.73~~

Free shipping

Pr Door and Window Alarm - Wireless Burglar Alarm with 105 DB Loud Sound and Bright Light, Easy to Install (Includes 1 Alarm and 2 Remote Controls)

~~£41.93~~

Free shipping

Pack of 1 Door Alarm, Door Opening Detector with Loud 130 Db Siren, Magnetic Wireless Door and Window Alarm for Doors, Windows and Cabinets, Home, Office (1/5)

Pack of 1 Door Alarm, Door Opening Detector with Loud 130 Db Siren, Magnetic Wireless Door and Window Alarm for Doors, Windows and Cabinets, Home, Office

~~£44.35~~

Free shipping