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Shop the best prices on 11,741 great value security system sensors. Shopping for security system sensors is easy with Fruugo, with SALE discounts, offers and savings on GreenZech, Ydcy, Dirtypigs and more. Buy security system sensors online safely with Fruugo, with secure payment and fast shipping to Ireland.

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Door and Window Alarm with 120dB Chime, Magnetic Sensor for Kids Safety and Home Security
€16.95 Save €8.00 RRP: €24.95
Security Alarm Sensor with Smart Motion Detection for Hotel Room and Door Window Safety
€16.95 Save €8.00 RRP: €24.95
4Pack WiFi Smart Door and Window Sensor, Instant Alerts, Alexa Google Compatible, Long Battery Life
€51.95 Save €27.05 RRP: €79.00
Door Window Alarm Sensor 12V Wired Magnetic Contact Switch for Home Garage Security Aluminum Alloy
€21.95 Save €11.00 RRP: €32.95
Door Window Security Alarm 130dB Loud Adjustable Volume 5 Modes Wireless Sensor with Remote Control for Home Safety Kids and Elderly
€21.95 Save €11.00 RRP: €32.95
MC38 Wired Door Window Sensor 30mm Wire Length Magnetic Switch for Home Security Alarm
€25.95 Save €13.00 RRP: €38.95
Door Contact Sensor Pack of 10, Wired Magnetic Reed Switch for Wooden Doors, Hidden Recessed Mount
€38.95 Save €20.05 RRP: €59.00
WiFi Door Window Sensor 4 Pack, Smart Home Alarm with Instant Alerts, Alexa Google Compatible
€32.95 Save €16.00 RRP: €48.95
WiFi Door Sensor Alarm 2 Pack, 90dB Smart Door Alert with App Notifications, Works with Alexa and Google Home
€37.95 Save €21.05 RRP: €59.00
RC36 NC Recessed Door Contact Sensor Magnetic Reed Switch for Metal Doors Alarm Black 5pcs
€16.95 Save €8.00 RRP: €24.95
2Pack Wired Recessed Magnetic Contact Sensors for Doors and Windows, Accurate Entry Detection
€16.95 Save €8.00 RRP: €24.95
Door Sensor Alarm with Sensitivity Detection, Easy Install Window Alarm System for Home Security
€16.95 Save €8.00 RRP: €24.95
Magnetic Door Contact Sensor NC Reed Switch for Garage Gate Security, Zinc Alloy, 40mm Gap
€16.95 Save €8.00 RRP: €24.95
Wired Magnetic Door Window Sensor Alarm Switch Detector for Home Security System MC31B
€16.95 Save €8.00 RRP: €24.95
Wireless Window Alarm Sensor with Sensitivity Detection and Indoor Motion Detector for Home Security
€18.95 Save €9.00 RRP: €27.95
Wireless Door Window Alarm Sensor with Magnetic Detector for Home Security and Instant Notification
€16.95 Save €9.00 RRP: €25.95
ABS MC38 Wired Door Window Sensor Magnetic Security Switch for Home Alarm System 1 Pair
€16.95 Save €8.00 RRP: €24.95
Smart Vibration Sensor with WiFi Window Door Alarm, RealTime Alerts, Home Security Detector
€23.95 Save €12.00 RRP: €35.95
1 Pair RC33 Recessed Door Magnetic Sensor Home Security Alarm Flush Mount Contact Switch DC 100V
€16.95 Save €8.00 RRP: €24.95
Wired Window Alarm Sensor NC NO Magnetic Door Sensor with Sensitivity for Home Security
€16.95 Save €8.00 RRP: €24.95
Trip Wire Reel 85FT SiliconeCoated for Early Warning Perimeter Security and Camping 2 Pack
€44.95 Save €24.05 RRP: €69.00
Tuya Zigbee Door Window Sensor A Burglar Alarm Smart Home Automation Security Protection Smart Life
€9.95 Save €2.00 RRP: €11.95
Outdoor Wired Active Photoelectric Single Beam Infrared Sensor Barrier Detector for Gate Door Window 12V Accessories Black
€22.95
Surface Mount Wired Security Window Door Contact Sensor Alarm MC-31 Magnetic Contact Reed Switch White 5 Sets 20x Screws
€19.95
Freezer Door Alarms, Window Security Alarm, Wireless Fridge Alarm, 4 in 1 Door Sensor Doorbell Loud Door Opening Alarm 108dB
€17.95 Save €17.00 RRP: €34.95
Magnetic Wireless Door And Window Open Detector Alarms Contact Sensors For Comprehensive Home Security Easy Installation
€32.95 Save €5.00 RRP: €37.95
125db Wireless Door Stop Alarm Stainless Steel 3 Sensitivity Level Sensor Wedge-shaped Portable Home Travel Security
€26.95 Save €13.00 RRP: €39.95
DOBERMAN SE-0137 4 in 1 Household Anti-theft Door and Window Magnetic Spring Sensor Super Loud Simple Alarm Set
€30.95
Call Button Restaurant Pager 433MHz Wireless Doorbell Bell Button for Home Security Alarm System Hardware Red
€6.95
CNC Roller Shutter Garage Door Switch Sensor Alarm Magnetic Contact With L-Shaped Bracket 2025
€21.95 Save €22.00 RRP: €43.95
Infrared Beam Detector Burglar Ir Alarms Sensor Alarm System 25-26
€13.95 Save €13.00 RRP: €26.95
Freezer Door Alarm When Left Open,Fridge Door Alarm with Delay Upgrade 3/15/30/60 Seconds Security, Adjustable Delay Wireless Fridge Alarm Door Open C
€46.95 Save €47.05 RRP: €94.00